If the carbon buildup is difficult to remove using a pipe cleaning brush, you may want to soak the valve in the EGR system cleaner for a couple of minutes. The picture below is for reference, but your specific EGR valve may appear different as. I am probably going to replace the Vaccum Solenoid. It has been soaking for two weeks now and still no results. I was reading it and not sure where it's telling me to put it in the engine. I have kept it up as it breaks down and tuned it up as needed, well just recently I ran into a problem with it skipping, so i replaced the spark plugs, the coil pak, the spark plug boots, AND cleaned the throttle body. Ford F150: How to Clean/Replace IAC Valve. If it needs to be replaced, then be sure to do so quickly or engine performance is affected. Top Rated Plus. Cleaning EGR Valve on a 1997 GEO Metro - Duration: 6:06. As an oil system additive, Sea Foam controls moisture, gum, varnish and residue deposits. seafoam to clean Egr valve seafoam to clean Egr valve. EGR+PCV+very high compression+looser tolerances= Gunked valves. Would rather not have to pull the intake manifold if i don't have to, if this is indeed the issue. Project Farm Recommended for you. It can either be poured thru the carb or introduced into the engine thru a manifold vacuum port, or even the PCV valve (which has the added benefit of cleaning that system!). Regards, Bob. Hi I have an 03 V6 tib with the 6 speed manual gearbox. seafoam does not work to remove carbon unless it's at the burning temperature of ignited. I know this has been asked a million times but what can i do to get closer to at. Here is a link to a video I made showing the gasket: ruclip. How to Clean the EGR Valve. Seafoam--can't believe what it did to my engine!! - Duration: 10:12. In the process of trying to remove it, but it is stuck!!! I also removed the intake manifold to clean it. ️ Soot and scale are removed from parts like the turbo vanes, EGR valve, DPF’s, catalytic convertors, injectors, valves, and airways etc. cleaning the TB, egr valve, and egr exhaust tube, which was completely stopped up with gunk. A bottle costs just a few dollars at any auto parts store or discount store. When the cleaning of the intake valves became regular maintenance on the N54 engines, we experimented with various ways to properly and effectively clean the carbon buildup. EGR Valve Cleaning - Duration: 15:54. Once you have it cleared out go get a can of SeaFoam or GM top cylinder cleaner and run it through the engine. This may be a little difficult and again will cause a bunch of smoke. EGR valve was fine. I have a 92 accord and on light to moderate acceleration there is a stumble, generally around 1500-2000rpm. The best way I've had a EGR cleaned (it was on a 1996 Dodge avenger, but EGR's work the same) was using a product called seafoam. Remove the bolt securing the EGR pipe to the EGR valve. Seafoam in the tank is fine if the goal is to clean components and injectors. I know this has been asked a million times but what can i do to get closer to at. It's easy to remove and clean up. The inside of the manifold was quite clean, this is the upper section which they use to recirculate the gases. HOW TO SEAFOAM YOUR VEHICLE. On the internet you can find a lot of detailed DIY instructions, I've already mentioned on this blog, but this latest video is the best, not for explanations, but for the best camera angle!. Cleaning carbon from an EGR valve and its passage is done with a wire brush and a can of throttle body or carburetor cleaner. I have a 2000 Tacoma Reg cab manual and i need to clean the EGR Valve. The tube was not blocked and that didn't help. Is that the PCV valve is set up in the reverse order of the H4 engines. Most of it in the right side port closest to motor, little bit in the other one. As for the EGR valve, I was able to get the two side bolts off with a 12mm ratchet, but I tried unsuccessfully for 2 hours getting the nut underneath the valve off. Important for modern Gasoline Direct Injection (GDI) engines where fuel cleaners can't reach the intake valves. How to clean your EGR valve: The method shown in the video below will help clean the intake tract and will have some effect on the EGR valve but depending on how severe the problem is, you may still need to remove the valve to clean it properly. ObNOxious Buildup The EGR valve allows exhaust gases to flow back into the combustion chamber at the appropriate times and levels. Wynn's Diesel EGR Valve Cleaner 150ml Extra Info. After cleaning the EGR valve, use a cotton rag to wipe dry. Runs perfect although I haven't had a chance to check the mileage. This is a home. I have a 92 accord and on light to moderate acceleration there is a stumble, generally around 1500-2000rpm. It can be cleaned using these steps. It also appears to persist at low throttle speeds, but not at idle. Well, I wanted to clean the EGR valve, but it didn't have much buildup on it, and it moved extremely easily. A clogged EGR can cause a misfire. The first two times I installed Amazon-sourced valves. We took a plugged EGR cooler from a 6. WhatchaDoinBob Recommended for you. If you failed for NOX, I would make sure you have a fesh tune up, fresh oil change. Sea Foam in the. c7498718&sr=8-1. The EGR valve is a possibility: a leak at the manifold to valve gasket, valve to tube gasket, even the EGR tube to manifold tube nut -- depending on your particular model. The manufacturer recommends against the practice of drawing Seafoam into the hose using suction. Knowing how to clean EGR valve is a simple and handy maintenance tips that will save you a lot of trouble as well as money. The tube was not blocked and that didn't help. It is also easily replaced. It can either be poured thru the carb or introduced into the engine thru a manifold vacuum port, or even the PCV valve (which has the added benefit of cleaning that system!). Some people swear by a can of Sea Foam. Cut the hose in half. The timing chains and guides have been replaced along with the Thermal Intake Sensor (what Jeep calls the MASS Airflow Sensor), MAP Sensor, and EGR valve. 4L 4 cylinder 91 ACURA LEGEND - How to Clean the Throttle Body How to clean your throttle body using 409 cleaner, a rag and long needle nose plyers. And it started running like crap last week. You will have to remove it from the engine to clean it though. I need to pass emissions control /Aircare on 91 Toyota Previa how do I clean EGR do i have to remove it? can i clean the lines and spray into the valve itself Posted by rfrew on Feb 15, 2012. Well, I wanted to clean the EGR valve, but it didn't have much buildup on it, and it moved extremely easily. 93 octane burns cleaner and also keep the high pressure fuel injectors clean which helps reduce carbon buildup on the valves. Project Farm Recommended for you. Sounds more like a water-pump going bad but we inspected that too and it's not. Someone else told me seafoam would work but how do I feed to the EGR system directly? I believe theres a carbon build up in the lines. Use the cleaning brush to remove stubborn deposits. So I cleaned out my throttle body and EGR valve today. I can see now from removing the TB that the intake manifold could use a scrub toobut that's another day. Now the CEL is back on with a P0400 code again. I have the air boot and the carb removed. The engine should stall or stumble to the point that you think it is about to stall. I have a can of aerosol seafoam and plan to shoot it through the throttle body as an attempt to clean the rest of the carbon I couldn't reach with my toothbrush. -- VAC = Valve Allow Cheats. I clean the MAF sensor regularly, knowing how old mustangs like mine are with MAFs, I clean all my vehicles mafs often. However, they actually make an aerosol decarboning treatment that is pretty easy to use in conjunction with the. Clean EGR valve untill the valve moves freely up and down without hesitation. the o2 sensor would also be a nice benefit, especially on a higher mileage vehicle. 0D - not sure how much this part varies on. Remove coil and EGR Dump little more than 1/2 bottle of seafoam engine cleaner in EGR ports. If needed, replace it (vacuum hoses that are damaged cause poor EGR valve operation or EGR system failure) Step 3. I have seen the exact same problem before and cleaning the above solved problem. I ve seafoamed the intake and the light didnt come on for a while after about 40 miles of running the car the light came back onautozone said the code was for the egr. If removing the EGR valve is a little beyond your mechanical ability then there are various EGR cleaning sprays available from retailers such as Amazon. Spray carbon deposits with EGR-valve or carburetor cleaner. I would also clean the MAF with CRC MAF cleaner, its in a silver can. I add sea foam about every 3rd tank of gas to keep it clean. Clean EGR valve untill the valve moves freely up and down without hesitation. 2007 Chrysler Town & Country with 74K. EGR Valve Gasket by Fel-Pro®. with BTP you'll have to spray into it to clean it. Replaced the pcv valve, cleaned the throttle body, replaced plugs, moved to send-synthetic oil, added Lucas injector cleaner, replaced faulty EGR valve and cleared the CEL. seafoam does not work to remove carbon unless it's at the burning temperature of ignited. Here we’re dealing with EGR valves that make up part of any ‘external EGR’ system. Anyone ever have to deal with multiple EGR valve failures? My 2010 JK's has failed several times now. When and if it comes loose I will post. Most are right up front. , he told me to pour the entire can into my gas tank with a full tank of gas and that would clean the valve and the engine light would go away. Also let us know if you spot any quirks. Bookmark this guide now to save time, money, and trips to the car shop. 1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT. Oxi-clean does such a tremendous job that I wouldn't be surprised if it grabs all the carbon. Anyone ever used the vacuum line leading to the EGR Valve for a dose of Seafoam? I’m thinkin’ it could use the cleaning and lubrication but would just like any insight if anyone’s tried it. 0L: Service type Exhaust Gas Recirculation/EGR Valve Replacement: Estimate $903. While you can't test your EGR valve function from home, you can clean it there, a simple task that effectively acts as a repair. Mine is a 2005 3. 4L 4 cylinder 91 ACURA LEGEND - How to Clean the Throttle Body How to clean your throttle body using 409 cleaner, a rag and long needle nose plyers. How to clean your EGR valve: The method shown in the video below will help clean the intake tract and will have some effect on the EGR valve but depending on how severe the problem is, you may still need to remove the valve to clean it properly. new valve carbon removers Carbon and residue problems are a bummer. had new plugs, wires, clean injectors. No problem with 1/2 throttle acceleration. Take off EGR valve. -- VAC = Valve Allow Cheats. on my 940, the EGR valve is located under the intake manifold against the block and it has a stainless steel pipe going to the intake manifold, it enters where all the vacuum plugs are, opposite of the TB. So unless it is stuck closed with carbon build up you will need an new one. An open EGR valve allows exhaust gases getting into the engine but at the. 87: Shop/Dealer Price $1198. Exhaust gas recirculation valves, or EGR valves, redirect hot exhaust gases back into your engine's intake manifold. Remove and clean those or replace if. The You Tube video is showing the 3. For best results, use SEA FOAM for 1 hour before oil change. I discovered a rifle bore cleaning kit works fairly well. EGR valves cut emissions and enhance engine efficiency; a failed EGR valve will result in a rough idle, loss of power, poor fuel economy and a trouble code that illuminates the Check Engine light. This requires poking out the carbon with a stiff wire (like a coat hanger) and dissolving the carbon with carburetor cleaner spray. Snowmobile Power Valves - Polaris, Ski-Doo & Arctic Cat Variable Exhaust Valve Program Principles They can be referred to as "APV" by Arctic Cat, "RAVE" by. ( 99+ clean the valve and pray) On the older cars we have the below systems. Especially uphill. The EGR valve is a possibility: a leak at the manifold to valve gasket, valve to tube gasket, even the EGR tube to manifold tube nut -- depending on your particular model. Most are right up front. NO check engine light, start with cleaning your IAC (Idle air control) valve, throttle body and your EGR valve. I also put some Seafoam in the gas tank to see if that will clear it out. Most of the time when EGR valves go bad it is because the diaphragm in it ruptures and it will not put a vaccum on it so it will not open, you cannot fix that. I own a 96 pontiac sunfire SE with the 2. 1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT. Previous posters said the EGR valve which was the problem in our case. Replaced plugs, wires and PCV valve. your passages are defiantely clogged. However, if your EGR valve has any wires hanging from it, do not allow them to be submerged in the liquid. A cleaning EGR valve job doesn't have to wait until engine performance issues appear or the Check Engine light comes on. With the engine running, squirt/spray it in through the brake booster hose, or through the PCV hose. Fill two holes with Seafoam. Not sure on the mpgs but that's really low next time i fill it up ill check the mpg. How to clean a gasoline fuel injection air intake with Sea Foam Spray by Sea Foam Official. I am a new caddy owner ('95 Seville SLS) and just pulled a few codes which brought me to this forum. Why not take a few moments to ask a question, help provide a solution or just engage in a conversation with another member in any one of our forums. You might as well just remove it. going to attempt to remove the egr valve today, soak the tubes/passages with ether seafoam or some other cleaner, then hit it with a air compressor or something. Ford F150: How to Clean/Replace IAC Valve. Jump to Latest Follow 1 - 6 of 6 Posts. EGR Valve = Exhaust Gas Recirculation Valve. I have kept it up as it breaks down and tuned it up as needed, well just recently I ran into a problem with it skipping, so i replaced the spark plugs, the coil pak, the spark plug boots, AND cleaned the throttle body. this seem to fix the. Knowing how to clean an EGR valve is a helpful trick to add to your repertoire, and a quick fix if your engine is suffering any of the associated negative symptoms. The EGR throttle valve meters the flow of fresh incoming air into the engine during EGR flow. fcord23 41,625 views. Common searches: Some cars suffer from EGR issues more than others. that will usually cure the rough idle issue, but if it doesnt look into getting new o2 sensors, possibly clean the egr ports, clean your iacv usally will smooth out idle problems Or you could actually just in sert hosinto seafoam, then once it starts to bog down on you pull it out and repeat!. This is a problem only in direct injected engines as fuel no longer flows over the intake valves keeping them clean. Dumping Seafoam into the EGR valve port is going to mostly go into the intake. Did some research and started suspecting the pcv valve, carbon deposits on the valves, or maybe dirty throttle body or clogged intercooler. This will cause smoke to come out the. Take off EGR valve. The vehicle had a gallon container of water in the engine compartment, and a copper tube went from this and passed across the exhaust pipe. Now, some will say to pour the Seafoam into the hose. Cleaning the Egr valve itself may or may not fix the problem. The EGR valve is much easier to remove compared to the EGR cooler. It's recirculates exhaust back into the intake so it can be burned again by the engine. Safely cleans & lubricates critical upper engine parts. The pipe with 2 bolts coming out to the left of it is the EGR pipe. The situation is such that you can quite easily get a buildup of carbon in the EGR valve, the port(s) between it and the intake, the. Mine was pretty gunked up with what seemed like exhaust/carbon, so I poured a little bit of seafoam and sprayed carb cleaner into it while I shoved a pipe cleaner into it. 24 or 19? When I try either of them I feel like I might kink the tubing. More than likely it's just a plugged up EGR valve and the water vapor entering the intake (which shouldn't happen and you've got a problem) slowly gets the EGR ports damp enough to clog with water molecules. After some years of service, you still can restore valve operation by removing and cleaning the obstructed passages inside the valve and the connecting exhaust manifold pipe to reestablish good engine operation. The three valve EGR is called a digital EGR and is quite expensive to buy if you have to. So after still not really knowing what problem was I went to halfords and was recommended a fuel additive to try and clean the system (Wynn’s Injector Cleaner For Diesel Engines 325ml) which again only gave a minimal improvement. I bought the car a year ago and haven't been able to get it to pass emissions yet. Non-Invasive. EGR valve cleaning WITHOUT DISMANTLING - Cleaner kit test Before/After How to clean an EGR valve without dismantling with a Bardahl EGR valve cleaner kit. In the UK there was a craze for steam injection in about 1970. Show Full Signature. P0404-EGR POSITION SENSOR RATIONALITY OPEN Theory of Operation The EGR valve has a position sensor and the EGR position rationality is designed to make sure that the valve moves freely within its operating range. I was wondering what's the best way to clean the EGR valve on my 98 Saturn SL1, manual transmission (225,000 miles). This requires poking out the carbon with a stiff wire (like a coat hanger) and dissolving the carbon with carburetor cleaner spray. Oh and a new gasket for the EGR. I figured I would send the intake out for a good cleaning and noticed a great deal of carbon for the front 2 left and right cylinders. This project I started more than a year ago. Favorite Answer. There are much better intake valve cleaning threads than this. Im scared to even think this but my last tank of gas lasted 107 miles:racer: My foot is kinda heavy i like to hear it rumble. I put the valve in no problems but it got dark before I got time to put the plugs in. CAUTION: Do not allow grit to fall into the valve chambers or between the piston and the cylinder wall. The valve meters post combustion exhaust gases to be mixed with the intake fuel charge and this dilutes the mixture. Valve seat is good seals closed. Look for it on youtube. A friend recommended taking the EGR valve out and cleaning it with WD-40. As an oil system additive, Sea Foam controls moisture, gum, varnish and residue deposits. It is also easily replaced. The EGR may have a ruptured diaphragm and cleaning will not accomplish anything. The most common culprit is carbon buildup on the throttle body, exhaust gas recirculation (EGR) valve and idle air control (IAC) valve. ie: BG Products: Good or Bad? - CRN: Colorado Racing Network Some like newer products that clean with anti-wear ingredients. Follow these simple steps to remove, clean and reinstall the EGR valve in your Toyota. I finally got around to cleaning my engine with SeaFoam, and once again the H6 is a totally different animal compared to the H4. if you dump seafoam down your intake plenum, it will not clean the egr ports. There is also a gasket. And yes it can be cleaned. I saw that at advanced auto they are around $150 but on ebay they go for $40-$50. I noted some improvements after cleaning mine at 45k; of course the best way to go about this is clean them, install OCC, and remove EGR. Clean the gasket area on the EGR valve and engine with a gasket scraper. I am the one that tried Sea Foam to desolve the carbon in my EGR valve. I think the choppy idle and this "p0401 inefficiency EGR flow" code are the same issue. Light brown smooth carbon. Just replaced the fuel filter, used sea foam to clean it out and got a fuel pump around 2yrs ago. Your EGR valve would be obviously clogged with gunk but somehow it's getting by without throwing a code. With the engine running, squirt/spray it in through the brake booster hose, or through the PCV hose. The EGR (or Exhaust Gas Recirculation) valve plays an important role in keeping emissions to a minimum and ensuring that your vehicle does not pollute the atmosphere. This exhaust mixes with the intake air and actually cools the combustion process. WhatchaDoinBob Recommended for you. I'll bet she not telling, or didn't notice it backfired. Never at idle should it be on. I put the valve in no problems but it got dark before I got time to put the plugs in. Last time I took off my throttle body, I saw one port immediately after the throttle body in the plenum backside. The dump the rest of the seafoam into a cup big enough to soak the bottom of the EGR valve in and let it sit. Here are the steps: Safety First. going to attempt to remove the egr valve today, soak the tubes/passages with ether seafoam or some other cleaner, then hit it with a air compressor or something. Does a 2000 RX300 have an EGR valve? My wifes 2000 RX300 [ 72000 miles ] has a gas-knock periodically. Basically, I often see people talking about taking the intake manifolds off older cars to clean them, or to seafoam them, separate from just trying to get the valves clean. You might as well just remove it. Having been around for more than 70 years; The Sea Foam company has had plenty of time to refine their products to the highest standard imaginable. UPDATE: I don't HAVE an EGR Valve! Update: I went out and looked under the hood (after talking to the service manager at local Dealer), and for some reason, my particular E doesn't HAVE an EGR valve! There is a block-off plate over the port. From what I have read in the past, the DIY you posted seems about right. Doing the Seafoam treatment first might help since carbon buildup in the combustion chambers can cause high temps in the CC's which can cause high NOX. 2---You quoted " I was pleased with the improvement in performance, but the car was still bucking, mostly first thing in the morning. when I took it in somewhere to check about a bad sounding brake, they told me the pads are aftermarket. The passage is curved so the wire will need to be bent by hand to get all the way in and get all of the carbon out. your gasser sure go for it, but not on the diesel. How to clean egr valve. A friend of mine who helped me clean my EGR valve recommended we seafoam the engine. Dumping Seafoam into the EGR valve port is going to mostly go into the intake. A bottle costs just a few dollars at any auto parts store or discount store. I did the seafoam in the Brake Vacuum line before I went to Auto Zone, so do you think it was the seafoam that fouled one of my plugs? Or do I just need a tune up due to the high mileage 145,000?. Hello, I would like to know the BEST WAY/METHOD to clean the EGR valve. Thanks a million. I'll clean it out and I'm going to be running some sea foam throughout my car to see how it is. cleaner is good. EGR flow malfunction could be caused by a clogged EGR valve or EGR tube. It's easy to remove and clean up. 1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT. I know of three people that are running disconnected, and now I am. Well, that did NOT fix my problem. I know this has been asked a million times but what can i do to get closer to at. With the engine running, squirt/spray it in through the brake booster hose, or through the PCV hose. These basic methods can help you acquire back performance, as nicely as get much more MPG. I figured I would send the intake out for a good cleaning and noticed a great deal of carbon for the front 2 left and right cylinders. You would need to remove & clean the manifold. I tried a couple weeks ago to use the Sea Foam spray, not the liquid. You get to the valve itself, clean out the ports, make sure everything is nice and clean and reassemble. We think Sea Foam is a nice brand that you can definitely trust. An EGR or Exhaust Gas Recirculation Valve is a device that recirculates a portion of your exhaust gases back into the combustion process (inlet). MERCEDES BENZ CLK I 208 EGR Valve and purge Valve Cleaning Hi Guys Ive been searchin the forum for the location of these two valve s as my car has 130K Miles and think they could need cleaning due to lack of top end power when I put my foot down. 6 out of 5 stars 563. Before thinking to change your EGR Valve Try Carbon Cleaning! To save money and resolve the problem. Sea Foam products are probably some of the most well known in the whole industry. Use a product called Deep Creep made by Seafoam and also give your engine a Seafoam treatment. The symptoms of a bad EGR valve can leave your engine running badly or not at all. Cleaning EGR Valve on a 1997 GEO Metro - Duration: 6:06. ACDelco 214-934 Egr Valve Seafoam Valve Cleaning Very simple how to guide to Seafoaming your engine to cleanse the valves and piston tops. What little might get into the EGR cooler is going to be blown back into the intake as soon as you start it because of the pressure of the exhaust gases. GAT Stream - Air intake cleaning fast and easy How to Clean and Replace an EGR Valve P0400 by. Then if your grid heater should cycle it will ignite in the intake. Cleaning your intake manifold & egr valve - posted in TDI & Diesel Forum: Am thinking of giving my egr and manifold a clean soon and was wondering what you guys used to clean inside the manifold. Part A: EGR valve This is held to the engine with two 10mm long bolts. Similar products are available. Remove EGR valve. I have a 2000 Ford Explorer 5. This procedure is applicable to 2. So, I got the EGR tube between the exhaust manifold and the valve off. I need to pass emissions control /Aircare on 91 Toyota Previa how do I clean EGR do i have to remove it? can i clean the lines and spray into the valve itself Posted by rfrew on Feb 15, 2012. Pull the clamp back, disconnect the hose from the EGR, and let the coolant drain. The EGR valve is a possibility: a leak at the manifold to valve gasket, valve to tube gasket, even the EGR tube to manifold tube nut -- depending on your particular model. Do NOT use a chemical dissolver or a vacuum cleaner to suck out the carbon while the intake manifold is still attached to the head. 1) What is location of EGR valve for a 1994 Ford Ranger XLT, V-6, 4. Honda EGR Valve Cleaning Here's a short DIY Video on how to clean the EGR valve on a Honda engine. I've read this can be a common problem and happen every 30k mile or so and looking to learn how to sort this myself instead of handing it to the dealership. So i have no idea if your 240 could have it. The three valve EGR is called a digital EGR and is quite expensive to buy if you have to. I have seen the exact same problem before and cleaning the above solved problem. How to clean a gasoline fuel injection air intake with Sea Foam Spray by Sea Foam Official. BWD/Intermotor EGR Valve – EGR1841 Seafoam Valve Cleansing Very simple how to manual to Seafoaming your motor to cleanse the valves and piston tops. I add sea foam about every 3rd tank of gas to keep it clean. On a SN95+ you'll want to do it through the PVC valve. The hose on the vacuum transducer on the tranny was so aged the metal line loosely fit inside it. 4) clean EGR tube, 5) clean the port on the intake manifold where EGR tube connect, 6) replace PCV valve, 7) replace MAP sensor. Continue spraying until no carbon deposits are coming out, just cleaning fluid. So, I guess maybe I need to clean it out. Amazon's Choice for egr cleaner. If it's your egr valve than remove it & clean it with carb cleaner. Elite Member. Remove the EGR valve. A bottle costs just a few dollars at any auto parts store or discount store. The engine runs better with warm air. -Remove EGR valve from exhaust manifold, clean inside gently to remove some tar -Soaked the tube connecting manifold and EGR in carb cleaner to remove all tar -Removed EGR from air intake and ran a tube from it to under the car into a bottle to collect crap, soaked the EGR tube in cleaner (with a stopper in the outlet tube to let it really soak. Can you clean an EGR valve? Yes, you can. It did a great job on my intake. More than likely it's just a plugged up EGR valve and the water vapor entering the intake (which shouldn't happen and you've got a problem) slowly gets the EGR ports damp enough to clog with water molecules. And cleaning the combustion chamber, which includes the part of the piston rings that face the combustion chamber. I was a little reluctant to remove the Throttle Body - i. I'll also be keeping my EGR valve since it's so new. Since the 1960s, vehicle manufacturers have successfully reduced harmful nitrous oxide emissions with the installation of the Exhaust Gas Recirculation (EGR) valves. Most of the time when EGR valves go bad it is because the diaphragm in it ruptures and it will not put a vaccum on it so it will not open, you cannot fix that. Hardly any pressure needed to move it with my pinkie. HOW TO SEAFOAM YOUR VEHICLE. As for the EGR valve, I was able to get the two side bolts off with a 12mm ratchet, but I tried unsuccessfully for 2 hours getting the nut underneath the valve off. Supposably seafoam, or a parent company has a spray form for spraying into your throttle body/plenum. Only now it seems to have gotten a bit worse. I am the one that tried Sea Foam to desolve the carbon in my EGR valve. Once the soaking of the EGR valve has been completed, you will need to apply some elbow grease in order to further clean it. I poured like 1/3 of a can into the circular hole and just a little bit into the squared hole. Start the car and check if the symptoms have. Someone else told me seafoam would work but how do I feed to the EGR system directly? I believe theres a carbon build up in the lines. Now I just need to tackle the iacv clean, EGR port and valve clean and we should be good to go for a few more years. had new plugs, wires, clean injectors. nissan navara egr valve eBay Find. Seafoam or egr cleaner like forte cleaner, do you have thinner solvent? If you have a turbo model, you can let it written out. I'm thinking if easy to do I'll remove the EGR valve assembly and clean everything myself, or try some EGR cleaning product (without removing the valve if I can't remove it myself), or some SeaFoam treatment etc. 6L There seems to be some confusion here between the 3. So i changed my EGR Valve and its still getting a P401 code. 23) Disconnect the fuel delivery tube and evaporation hose. If the throttle body ports are obstructed, then there may not be enough vacuum to open the valve. I re-connected the EGR valve and only really noticed a slight increase in power, nothing massive. Cleaning EGR Valve on a 1997 GEO Metro - Duration: 6:06. "Deleting" the EGR is just removing the valve and installing block-off plates. I'm unsure how to diagnose the fuel pump issue. Before replacing any parts try cleaning the EGR valve, tube and passages. If your engine started running really rough all of a sudden, your EGR valve may be stuck open. Also let us know if you spot any quirks. You get to the valve itself, clean out the ports, make sure everything is nice and clean and reassemble. Bardahl makes a product that supposedly cleans the EGR "in place" without removal, and other YouTube "How To" videos and forums suggested. Jul 8, 2017 - Get that new-car purr back again after cleaning an EGR valve Stay safe and healthy. How To Clean Your IAC. Long story short, he has a lot of experience on gasoline engines and I trusted that he knew what he was doing. You can clean the valve once you remove it, rather than replacing it, which is much more expensive. Im scared to even think this but my last tank of gas lasted 107 miles:racer: My foot is kinda heavy i like to hear it rumble. I have kept it up as it breaks down and tuned it up as needed, well just recently I ran into a problem with it skipping, so i replaced the spark plugs, the coil pak, the spark plug boots, AND cleaned the throttle body. ? idle air control valve, map sensor, oxygen sensor and throttle position sensor and my truck still idles really high. As mentioned, the main cause for EGR Valve issues is due to a blockage or a leak. To clean carbon deposits from air intake systems, intake valves and combustion chambers inside the engine, including GDI engines, Sea Foam recommends using Sea Foam Spray Top Engine cleaner and lube (Part # SS-14). Thanks for all the replies. First, soak the EGR valve in a bowl filled with carb cleaner. 8 with an EGR valve. Mine was pretty gunked up with what seemed like exhaust/carbon, so I poured a little bit of seafoam and sprayed carb cleaner into it while I shoved a pipe cleaner into it. Clean the gasket area on the EGR valve and engine with a gasket scraper. These are sprayed directly into the inlet manifold (after the turbo) or directly into the intake system (remove the air filter and spray). It'll help a lot. Installing a New EGR valve on a 3. I can't figure out which one it is. This is a problem only in direct injected engines as fuel no longer flows over the intake valves keeping them clean. also depending if its a negative pulse or a positive pulse egr valve. ie: BG Products: Good or Bad? - CRN: Colorado Racing Network Some like newer products that clean with anti-wear ingredients. What year is this truck? What problems are you having? Tyler Dodge Dakota JOIN HERE 2/25/2010 19:23:12: RE: EGR valve IP: Logged Message: 95, Idk what i did but it's fine now. After you follow the directions given above by muscle, tom3 & rscamaro to clean out the valve and manifold ports, Get some stainless steel mesh screen and 2-EGR gaskets that are graphite coated. The second can you want to suck/pour 1/3 of a can into an engine port (like the brake booster, or PCV line) with the engine running. Unfortunately they are very hard to get to without removing the throttle body. The EGR valve in on the back of the right head. the o2 sensor would also be a nice benefit, especially on a higher mileage vehicle. 2014 Kia Forte - GDI valve cleaning. Grab the tools below that you probably already have, and follow this simple guide to learn how to clean an EGR valve. Sea Foam in the. You can take the EGR valve off the car, replacing the gasket when restoring it, and clean it with carb cleaner, (maybe) Seafoam, or a specialized cleaner. The EGR valve recirculates a small amount of exhaust into the combustion cycle. This is similar to, but not the same as my question Effects of Dirty Piston Heads and Intake Valves. also depending if its a negative pulse or a positive pulse egr valve. It will not clean the exhaust /drive side of the turbo. Before replacing it, I decided to try cleaning it. I emailed Seafoam Company and they said it will work freeing up a EGR valve and will not hurt the diaphram or any part thereof. I didn't feel like dealing with this yesterday, so I ran some sea foam through the intake, disconnected the battery and crossed my. Here is a link to a video I made showing the gasket: ruclip. Common Chamber - because I did not feel comfortable removing the Fuel Rail. Your EGR valve is clean. It can be cleaned using these steps. Seafoam in the tank is fine if the goal is to clean components and injectors. The engine runs better with warm air. The valves aren't bad, they are just the victims of the carbon. After cleaning intake valves, people tend to pick up a little power lost from them being dirty and report smoother idles. HOW TO SEAFOAM YOUR VEHICLE. Anyone ever used the vacuum line leading to the EGR Valve for a dose of Seafoam? I'm thinkin' it could use the cleaning and lubrication but would just like any insight if anyone's tried it. Confirming a stuck EGR valve can be as simple at giving it a light tap on the side of the valve, which may free it from its stuck-open position. Go from small pipe A to the EGR valve with a piece of vacuum hose. I'll also be keeping my EGR valve since it's so new. EGR - Exhaust Gas Recirculation. ️ Dynamic parameters are increased when accelerating. I believe all Direct Injection engines suffer from carbon build-up, just the nature of their design which sends EGR gasses over the valves but the fuel is injected directly, past the valves, so the only way to eliminate the problem is to use 2 catch cans or one plus venting to air/Blow off valve, instead of EGR. I emailed Seafoam Company and they said it will work freeing up a EGR valve and will not hurt the diaphram or any part thereof. I posted in one of the larger relevant threads about this over a month ago, no response. (EGR) Valve - Exhaust Gas Recirculation Valve - What Should You Know The, (EGR) valve is designed to cool exhaust gas; by burning exhaust for a second time within the intake system. ) So if you are doing any sort work that requires removal of, or easy access to, the intake manifold, it pays to give the EGR section a thorough cleaning. Ford EGR Valve Puller - 6. Let the solvent sit in there and dissolve any carbon buildup. Driveability issues are often some of the most difficult problems to diagnose, but an erratic idle or frequent stalling on the F-150 is often a faulty idle air control valve. Said he has done this on another Chrysler and it worked fine. This is the last part of the system you will remove. Both the vent and purge valves are closed with engine off. All you need are a few hand tools, some elbow grease, and a good quality EGR system cleaner. since the falilure in question is hc, which is a misfire indicator (co is the rich running indicator), i would say a tune up and a top engine clean is in order. Engineered using the latest technologies and global engineering resources, the gaskets meet specific OEM needs and. There are much better intake valve cleaning threads than this. SEA FOAM Diesel Petrol Engine Injector Cleaner & Fuel Stabiliser. From a search on the EGR, others suggested trying to clean it. - Hello again to all AW members. The Isuzu Rodeo's EGR valve recirculates exhaust gasses back into the combustion chamber for more complete burning. Normal seafoam DOES not go through your air intake (filter/piping) it goes into you intake manifold. Another thought - EGR should only be ON with a hot engine off idle. While replacing an EGR valve isn't hard, yours might not be dead—just too filthy with carbon and gunk to function properly. Sea Foam Spray is a blend of cleaning and lubricating petroleum ingredients that can be used SAFELY in all types of 2 and 4 stroke gasoline engines. Shop for Sea Foam Motor Treatment 16oz with confidence at AutoZone. Inspect the valves and valve seats to see if they are cracked, rough or warped. possibly parts cleaner or solvent may work. So 2 years and a half hour cleaning job isn't that bad. Be sure not to get it on the upper diaphragm. but mostly its carbon holding the valve open. Doing the Seafoam treatment first might help since carbon buildup in the combustion chambers can cause high temps in the CC's which can cause high NOX. To find out if the EGR is defective connect a piece of vacuum line to the EGR and, lacking a hand vacuum pump, suck on the hose. In the German makes above with turbo'd engines, oil fumes/gunk and carbon enter the system through the PCV, EGR and emissions systems and build up on the stems and head of the intake valves. The only products that seem to work doing that is the Seafoam treatment or the BG44K treatment. So I bought the EGR Valve and replaced it, and new plugs to put in. If your engine needs cleaning, adding seafoam will be effective, but the problem with seafoam is that it may knock lose a big chunk of oil sludge and jam an oil galley, line, or sludge up your oil filter and force open the bypass valve. I noted some improvements after cleaning mine at 45k; of course the best way to go about this is clean them, install OCC, and remove EGR. Take off EGR valve. Router Screenshots for the Sagemcom Fast 5260 - Charter. A dirty IAC will cause performance problems such as surging idle, etc. By the way, I have the same year / model car, but with 100K fewer miles on it. Since the 1960s, vehicle manufacturers have successfully reduced harmful nitrous oxide emissions with the installation of the Exhaust Gas Recirculation (EGR) valves. I believe all Direct Injection engines suffer from carbon build-up, just the nature of their design which sends EGR gasses over the valves but the fuel is injected directly, past the valves, so the only way to eliminate the problem is to use 2 catch cans or one plus venting to air/Blow off valve, instead of EGR. Said he has done this on another Chrysler and it worked fine. So unless it is stuck closed with carbon build up you will need an new one. Jump to Latest Follow 1 - 20 of 26 Posts I would just remove the egr valve, clean it out with some brake cleaner, clean or replace the vacuum line to it and DEF. Dealer finally figured out with the help from GM that the intake valves were caked with carbon. From what I have read in the past, the DIY you posted seems about right. Pulled the old and put a new one in. Honda EGR Valve Cleaning Here's a short DIY Video on how to clean the EGR valve on a Honda engine. Once you have it cleared out go get a can of SeaFoam or GM top cylinder cleaner and run it through the engine. there isnt any additive to run thru the engine to clean it. 1995-1997 Ford F150 F250 F350 5. Here is a Honda J32A1 ( 3. Newer vehicle models use electronic EGR systems that may include additional components, even a digital valve that eliminates the need for vacuum control altogether. Light brown smooth carbon. EGR Valve Gasket by Fel-Pro®. If you failed for NOX, I would make sure you have a fesh tune up, fresh oil change. Elite Member. DIY Intake Valve Cleaning FA Series Factory 2. When you get the replacement done, the service should include an EGR transducer test, inspection of vacuum hoses connected to the EGR valve, a clearing of all the trouble codes, a cleaning of carbon deposits from the EGR pintle, and a test of the EGR valve to ensure it operates smoothly. this product is available at advance auto. Project Farm Recommended for you. Especially uphill. I think either your EGR valve is stuck open, or the electronic valve on the driver side fire wall is not functioning proper. A friend recommended taking the EGR valve out and cleaning it with WD-40. The stock configuration of nearly every engine positions them near intake valves, exposing them to blow-by heat, carbon, and oil on a regular basis. Trouble code 1401 has came up again stating there is an insufficent flow in the EGR system. I clean the MAF sensor regularly, knowing how old mustangs like mine are with MAFs, I clean all my vehicles mafs often. The best way I've had a EGR cleaned (it was on a 1996 Dodge avenger, but EGR's work the same) was using a product called seafoam. Also let us know if you spot any quirks. Step 2, Inspect the EGR valve for damage. A bottle costs just a few dollars at any auto parts store or discount store. 1/2 a can in with fresh oil, 1/2 a can when you stop to fill up the gas tank. Once you have removed that plastic piece along with the elbows, spray some carburator cleaner into the section of pipe you removed to clean out the oil and gunk. cleaning the TB, egr valve, and egr exhaust tube, which was completely stopped up with gunk. Engineered using the latest technologies and global engineering resources, the gaskets meet. Signmaster. you can soak it in sea foam as well. Why is oil going through my PCV valve to my intake ? On my 5. Anyone ever have to deal with multiple EGR valve failures? My 2010 JK's has failed several times now. You can try cleaning the EGR valve and passages with Seafoam. Sea-Foam is a very powerful petroleum solvent. The symptoms of a bad EGR valve can leave your engine running badly or not at all. STEP BY STEP GUIDE (Geo Metro Seafoam Part 1) - Duration: 9:05. Using the power of the turbo, the spray will be forced towards the EGR valve and help towards cleaning it. Once everything is cleaned and inspected, replace the EGR gasket(s) and attach it to the engine. (seafoam, etc. How to clean a gasoline fuel injection air intake with Sea Foam Spray by Sea Foam Official. Start the car and check if the symptoms have. DIY Intake Valve Cleaning I've looked all over the place for information from someone that has cleaned their own intake valves manually (without a media blaster) but can't seem to find anything. It clearly works better than most of the other valve cleaners we have tried and is just easier to use without leaving a mess everywhere. 2---You quoted " I was pleased with the improvement in performance, but the car was still bucking, mostly first thing in the morning. My last trip was 25 miles one way, averaged 18. If it's your egr valve than remove it & clean it with carb cleaner. Sometimes this can be. I am not sure how the EGR works on newer models, but if it has a vacuum actuated valve, test the valve with a hand held pump. Non-Invasive. Go from small pipe A to the EGR valve with a piece of vacuum hose. My question is, can the egr be bad, or is there EGR valve- chevy- 4. Trying to do a tune up, plugs, cleaned the carb, which looked as if someone sprayed undercoating in it, and checking the EGR valve to make sure it's clean. stay awayfrom "SeaFoam". I have heard of those screens for the EGR but never used one. clean egr. Water does a nice job decarboning the piston/cylinder area but has virtually no effect on the intake side of the intake valve or EGR passages and that is where the majority of carbon build up happens. EGR valve cleaning WITHOUT DISMANTLING CATALYTIC CONVERTER CLEANING Seafoam vs Marvel Mystery Oil! The Ultimate Showdown! - Duration: 10:00. Cleaning a egr valve on a 01 ls. I can't find it. Safely cleans & lubricates critical upper engine parts. Im trying to remove my EGR valve because my car idles rough or high at about 2,000 rpm and usually wont go down and when i step on the pedal, the engine studders and then revs up. This procedure is applicable to 2. How to clean your EGR valve ? Try CARBON CLEANING ! Decarbonization allows to clean your engine and your EGR valve. Use 1 pint of SEA FOAM to every 25 gallons of diesel fuel to add lubricity, clean fuel lines, injector pump and remove moisture. sea foam cleans. 0L Turbo Powertrain Welcome to the North American Subaru Impreza Owners Club Seafoam and nylon brushes is how I cleaned my gunked valves on my 2016 WRX with 10k miles. Show Full Signature. I'll clean it out and I'm going to be running some sea foam throughout my car to see how it is. The EGR was eliminated when they switched the distributor setup and the ECU for sequential fuel injection. Does a 2000 RX300 have an EGR valve? My wifes 2000 RX300 [ 72000 miles ] has a gas-knock periodically. This is done by opening and closing an EGR valve. " My car was doing the same even after cleaning the MAF,EGR and throttle body. Page 1 of 3 - Cleaning EGR valve - whats the best cleaner - posted in Diesel Engines (Mondeo Mk3): Hello everyone in MEG land! Ive pulled the EGR valve off my car this evening to give it a clean and was wondering if anyone could advise me whats the best cleaning solution (and method) to use to get the soot off the inside please??. How to clean a gasoline fuel injection air intake with Sea Foam Spray by Sea Foam Official. I can see now from removing the TB that the intake manifold could use a scrub toobut that's another day. The piston came loose from the shaft. A4 (B5 Platform) Discussion - 1996 A4 2. Seafoam and CRC are both good for throttlebody cleaning. My VW TDI users forum had many stories of hydrolocking diesel compression ignition engines with Sea Foam brand. Thanks for all the replies. Use the cleaning brush to remove stubborn deposits. The Rodeo uses a canister-shaped EGR valve that is electronically controlled (as opposed to mechanically operated). Always check manufacturer's specifications for any details. Recirculation of the exhaust leads to a gradual accumulation of carbon particles inside the. Yes that's the plan. 1/2 a can in with fresh oil, 1/2 a can when you stop to fill up the gas tank. I've attached photos here. Step 7: Re-attach the EGR gaskets. Re: How To Clean The EGR Valve Hey Krashed989, Thanks for the excellent post on how to clean the EGR Valve. Also let us know if you spot any quirks. Cooler is always better inside your engine. MERCEDES BENZ CLK I 208 EGR Valve and purge Valve Cleaning Hi Guys Ive been searchin the forum for the location of these two valve s as my car has 130K Miles and think they could need cleaning due to lack of top end power when I put my foot down. you need to remove the brass plugs on the manifold and clean the ports manually. What Problems Does a Bad EGR Valve Cause? Idling and stalling problems can really add stress to your daily commute. The hose on the vacuum transducer on the tranny was so aged the metal line loosely fit inside it. the o2 sensor would also be a nice benefit, especially on a higher mileage vehicle. Do not immerse the plastic components and electrical parts. Acarte Carburetor Carbon Dirt Jet Cleaner Tool Kit 10 Cleaning Needles with 5 Brushes MAHLE G32461 EGR Valve Gasket. Nissan EGR Valve eBay The Nissan EGR valve is an essential part of your vehicle's engine system. The Sea foam spray is intended to be used for many things but specially the air intake. What is the cost to diagnose the P0401 code. I already cleaned all the ports and replaced the EGR valve, I used seafoam and put it directly through the vacuum line that feeds the intake it says use 1/3 pint I used 1/2 pint insteads, I cleaned the throttle body and the MAF the only thing I have not messed with is the o2 sensors it. What little might get into the EGR cooler is going to be blown back into the intake as soon as you start it because of the pressure of the exhaust gases. I have cleaned the throttle body as the idle is not quite of nice and smooth as it once was but nothing major to worry about. Inspect the valves and valve seats to see if they are cracked, rough or warped. Freddy shows you how to use SeaFoam to clean your intake runners, intake valves and the inside of the combustion chamber by having the Sea Foam sucked into the engine through a vacuum line. Order EGR Valve for your 2010 Ford Explorer and pick it up in store—make your purchase, find a store near you, and get directions. In this episode of Driveway Dudes, Paul and Will shows you how to clean your EGR (Exhaust Gas Recirculation) Valve, Inlet Manifold and Inlet Valves without removing any of them. There is a gasket between EGR tube from the valve, which must be purchased separately and should be replaced. Take a piece of card board and cover the intake port for the EGR. STEP BY STEP GUIDE (Geo Metro Seafoam Part 1) - Duration: 9:05. Most are right up front. The materials you will need to clean your IAC are: Brake cleaner, WD40, 10 mm and 5/16" sockets/drivers or wrenches. It has 160,000 miles on it. Never at idle should it be on. How to clean a gasoline fuel injection air intake with Sea Foam Spray by Sea Foam Official. My emission light came on because my egr valve had an insufficient flow. Then I started getting P0404 (EGR circuit out of range). So i have no idea if your 240 could have it. I figured I would send the intake out for a good cleaning and noticed a great deal of carbon for the front 2 left and right cylinders. This cleaner will help remove carbon and tar-like deposits that restrict air flow and cause the EGR valve to stick. The inside of the manifold was quite clean, this is the upper section which they use to recirculate the gases. It is breaking off in chunks and getting caught in the EGR valve since you loosened it with the sea foam. The valve holds a vacuum and the engine stutters slightly when egr…. A quick cleaning or replacement of the IAC valve can typically solve this problem at an inexpensive price. Helps diminish black smoke exhaust emissions. Last edited by dee_dee_railed ; September 16th, 2012, 06:03 PM. To check the egr valve is pretty easy just apply vaccum to the top hose in the picutre and see if you can get it to open up, this will take more vaccum than the other one so suck on it pretty hard lol. Sea foam? Carb cleaner? WD40? Is it a good idea to 'pour' some Seam foam down the holes of the engine that the EGR valve covers?. We're live with the new site! Please let us know what you think in this thread. So after still not really knowing what problem was I went to halfords and was recommended a fuel additive to try and clean the system (Wynn’s Injector Cleaner For Diesel Engines 325ml) which again only gave a minimal improvement. Im scared to even think this but my last tank of gas lasted 107 miles:racer: My foot is kinda heavy i like to hear it rumble. It is also easily replaced. There is a gasket between EGR tube from the valve, which must be purchased separately and should be replaced. I've read some of the EGR valve threads and the way to clean the EGR valve seems to vary a lot. 4) clean EGR tube, 5) clean the port on the intake manifold where EGR tube connect, 6) replace PCV valve, 7) replace MAP sensor. Cleaning out the EGR system. Trouble code 1401 has came up again stating there is an insufficent flow in the EGR system. Re: Location of EGR valve: 2008/9 Pontiac Torrent 3. Ford F150: How to Clean/Replace IAC Valve. How To Clean Your IAC. Not sure on the mpgs but that's really low next time i fill it up ill check the mpg. Here we’re dealing with EGR valves that make up part of any ‘external EGR’ system. Project Farm Recommended for you. How to clean egr on toyota previa. EGR valve was fine. 2 $5 cans of Seafoam are a Godsend. IS300M Get some AIR INTAKE cleaner to clean your TB and Intake while its out of the car. since the falilure in question is hc, which is a misfire indicator (co is the rich running indicator), i would say a tune up and a top engine clean is in order. Router Screenshots for the Sagemcom Fast 5260 - Charter. As for the valve, I'm sure that's going to be just as easy. However, they actually make an aerosol decarboning treatment that is pretty easy to use in conjunction with the intake port for the crankcase breather hose. Do Not pour seafoam into the turbo or intake. I have cleaned the throttle body as the idle is not quite of nice and smooth as it once was but nothing major to worry about. UPDATE: I don't HAVE an EGR Valve! Update: I went out and looked under the hood (after talking to the service manager at local Dealer), and for some reason, my particular E doesn't HAVE an EGR valve! There is a block-off plate over the port. The EGR valve uses a plate and a built in passage system to deliver the combustion gases to the valve from the intake manifold runners. 1998 Ford Windstar EGR/DPFE 5 Answers. The fix is to remove the head and clean/recondition it along with cleaning the. 0 does not have an EGR Valve per se - the cam is ground such that it leaves a tad of exhaust gas in the cylinder, controlling NOx. This part contains a pad that looks like a filter. seafoam does not work to remove carbon unless it's at the burning temperature of ignited gasoline. 000), DPF ($ 600 - 2. The thin wall design of chrome hand sockets has been combined with the strength and durability of GP Impact Sockets to create DUO-SOCKET(R). This is covered very well by nuts about bolts in his video. The EGR code, I believe, says its insufficient voltage to the sensor, and I read that a ford repairs website. 0L Turbo: Service type Exhaust Gas Recirculation/EGR. There is also a gasket. I've read some of the EGR valve threads and the way to clean the EGR valve seems to vary a lot. the valve itself may be faulty and not operating as designed. Remove and clean those or replace if needed. Engineered using the latest technologies and global engineering resources, the gaskets meet specific OEM needs and. Top Rated Plus. clean egr. What is an EGR (exhaust gas recirculation) valve? Learn more about the symptoms of a bad EGR valve, how to clean one and test it to make sure the valve is working. The PCV system functions to recycle combustion blow-by through the intake. Here we’re dealing with EGR valves that make up part of any ‘external EGR’ system. This procedure is applicable to 2. EGR Cleaning Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine. The ECU detects insufficient EGR flow and shuts the valve so I get no EGR and a warning light. I clean the MAF sensor regularly, knowing how old mustangs like mine are with MAFs, I clean all my vehicles mafs often. Most are right up front. So, I got the EGR tube between the exhaust manifold and the valve off. Allow the EGR valve to soak overnight if possible. I'll likely use a sea foam to clean it all out.