Egr cooler cleaning

How to clean clogged EGR cooler? Tags: egr cooler. All I hear about clogged EGR coolers is that they get replaced. Is it even possible to clean it? Or does it have to be replaced? We have a week to either clean or replace the EGR cooler before it has to be smog tested again failed because of P Tim Jones likes this. A lot of people use oxyclean, royal purple, carb cleaner, brake cleaner, and let it soak and change every 4 or so hours.

I used gunk and oven cleaner, as did others, on mine and it worked great. Some have used a piano wire to poke through it to clean it out. Just do so carefully. If it's fully clogged, it will take time and patience. You might be able to check a junk yard for one that's not so clogged so you can clean it up easier and fast so you can get it inspected.

Then you won't have to rush to get it done. Maybe a place that has a glass beader to clean it out. Raytheeagle Senior Member. Pressure washer will help out. How much oil is your Prius consuming? Good luck and keep us posted. I also tried a pressure washer that someone said they used. It helped some. Soaking seems to be the thing that needs to be done to soften up the hardened oil. I sprayed oven cleaner in it and covered the hole until it came out the other end, 4 or 5 times.

Let it soak for 30 minutes or so then used the pressure washer. Make sure you wear some sort of eye protection. I didn't have carb cleaner but brake cleaner helped also.

Indications of a Failed EGR Cooler

Ben Schneider likes this. Any tutorial you would recommend. The egr cooler is a radiator style device and has many small passages. To thoroughly clean it, removing the cooler is required.The EGR cooler is a component used to lower the temperature of the exhaust gases that are recirculated by the EGR system.

The EGR system recirculates exhaust gases back into the engine in order to decrease cylinder temperatures and NOx emissions. The gas circulated by the EGR system can be considerably hot however, especially in vehicles equipped with diesel engines. For this reason many diesel engines are equipped with EGR coolers to lower the temperature of the exhaust gases before they enter the engine.

An EGR cooler is a metal device that employs thin passages and fins to cool the exhaust gases. They function in much the same way as a radiator functions, by using the cool air passing through the fins to cool the exhaust gases as they flow through the cooler. This can lead to performance issues, and even problems with passing emissions standards for states where they are required.

Usually a bad or failing EGR cooler will produce a few symptoms that can alert the driver of a potential problem that should be serviced. One of the first symptoms of a potential problem with the EGR cooler is engine overheating. If the EGR cooler has any issues that restrict the flow of exhaust gases through the cooler it can cause the engine to overheat. Over time, carbon can build up on the inside of the EGR cooler and restrict flow through the cooler. This can cause the unit to overheat, at which point it will not be able to cool the exhaust gases, and the engine will overheat as a result.

Engine overheating can lead to knock or ping from the engineand even serious damage, if the issue is left unattended. Another issue of a problem with the EGR cooler is exhaust leaks. If the EGR cooler gaskets fail, or the cooler gets damaged for any reason, it can cause an exhaust leak to develop.

An exhaust leak may be heard as an audible hissing or tapping sound coming from the front of the vehicle. This will reduce the efficiency of the EGR system, and negatively affect engine performance. If the computer detects a problem with the EGR system, such as insufficient flow or exhaust, it will set off the Check Engine Light to alert the driver of the issue.

A Check Engine Light can also be set off by a wide variety of other issues, so having the computer scanned for trouble codes is highly recommended.

EGR coolers are not found on all vehicles, but for the vehicles that are equipped with them they are critical to the performance and driveability of the vehicle.

Any problems with the EGR cooler can also lead to increased emissions, which will be a problem for states that require emissions testing for all of their vehicles. For this reason, if you suspect that your EGR cooler may be having an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if the cooler should be replaced.

The most popular service booked by readers of this article is Vehicle Engine Mechanical Inspection. Our certified mobile mechanics make house calls in over 2, U. Fast, free online quotes for your car repair. Schedule Vehicle Engine Mechanical Inspection.During these challenging times, we guarantee we will work tirelessly to support you.

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We will get through this together. The EGR valve recirculates a small amount of exhaust into the combustion cycle. The warmth of the exhaust lets the combustion chambers warm up quickly, while the spent, inert gases keep the chambers from getting too hot when the engine fully warms up.

Whether mechanical or electronic, EGR valves open and close to control the gas flow. If left open, the excess vacuum will cause the engine to act like it wants to stall, idling roughly or surging. If the valve stays closed, detonation could occur in the combustion chambers; this knocking or pinging will lower mileage and the lifespan of the engine. To smooth a rough idle, or hesitant or surging acceleration, and reduce knocking, clean your EGR valve.

To clean your EGR valve, start by cleaning the vacuum hose with carburetor cleaner or a pipe cleaner. Then, unbolt the valve, and clean the return tube and entry port using carburetor cleaner, and a toothbrush or pipe cleaner. If you have an electronic EGR valve, make sure to disconnect the negative battery cable, and remove any sensors and electrical connections before unbolting the valve.

After cleaning, reinstall the valve and reattach the vacuum hose. Did this summary help you? Yes No. Log in Facebook Loading Google Loading Civic Loading No account yet? Create an account. We use cookies to make wikiHow great. By using our site, you agree to our cookie policy. As the COVID situation develops, our hearts ache as we think about all the people around the world that are affected by the pandemic Read morebut we are also encouraged by the stories of our readers finding help through our site.

Article Edit. Learn why people trust wikiHow. This article was co-authored by Andrew Everett. Tips and Warnings. Things You'll Need. Related Articles. Article Summary. Method 1 of Clean and inspect the vacuum hose. Remove the vacuum hose and inspect closely for wear cracks or weak spotsthen clean out the carbon deposits either with a spray can of carburetor cleaner or with a pipe cleaner if the deposits are hardened or compacted. Inspect the EGR valve for damage.

Loosen any bolts fastening the EGR valve to the engine. Inspect the gasket lining the bottom plate of the valve. If it's not frayed or cracked, you can reuse it. Clean the return tube and gas entry port.Try it free for 14 days.

View Full Image. Diesel Power Magazine how to. Smith —. Plugged exhaust gas recirculation EGR coolers are the bane of every diesel pickup owner. These radiators plumbed into the intake system do their job at keeping the air we breathe healthier by cooling and recirculating unburned gases back through the combustion process.

Mark says OFI cleans Cummins 6. Shopping from online sources can cut those prices, but they are still a hit on the wallet. Cheaper Alternative When DIY owners are faced with such parts costs, some start thinking about cleaning as an alternative. That means they can be cleaned like a radiator. The best way to clean an EGR cooler is using ultrasonic cleaning technology offered by some radiator and other specialty repair shops around the country. Another alternative, and the one we are exploring here, is cleaning the cooler the old-fashioned way: filling it with a cleaning solution, letting it sit for several hours, periodically shaking during the soak, and rinsing it out.

But the big question remains: What did the cleaning solution actually do inside the cooler? Cleaners and Degreasers There are dozens of cleaners, degreasers, and specialty solvents. Simple Green All-Purpose Cleaner is a nontoxic, noncorrosive, biodegradable product with a green hue. Mopar EGR System Cleaner is a concentrated solvent with isotridecanol, ethoxylated2-propanol, and other ingredients.

Recommended dilution with water is Bench Test We decided the best way to see what was happening inside an EGR cooler was to have a little fun and do our own shade-tree test using these five cooler-cleaner contenders.

We took a plugged EGR cooler from a 6. Each cross section was immersed so the top two rows were sitting above the solution, which allowed us to compare cleaning effectiveness. The test was done on a warm, degree day in direct sun. At the end of the minute soak, we pulled the test sections out, rinsed them under running water from a garden hose, and compared the results.

What we discovered was surprising. For example, the most expensive product we tested, Mopar EGR System Cleaner, barely made a dent in removing the oily residue and soot, performing only marginally better than industrial-strength carburetor cleaner.

How to clean clogged EGR cooler?

It started eating away at the diesel crud the moment we dropped the test section into the bowl. Purple Power is going to be our go-to cleaner if we only have a few hours to spend on flushing out a plugged EGR cooler. Piston Kleen was a very close second, showing it dissolves carbon and black crud right down to the bare metal. Our impromptu bench test showed either of these two products will do the job for a DIYer as an alternative to throwing a plugged-up EGR cooler in the scrap pile.

This plugged-up 6. Here is the shade-tree bench test, with sliced sections of the EGR cooler and glass bowls at the ready. Jackstands are there to hold the PVC pipe that suspends the sections in the solutions.

egr cooler cleaning

Lance Deal, a friend who cut the EGR cooler into sections for us, shows off his handiwork. A power hacksaw sure beats doing this by hand! Splash down! Within a minute of the cooler slices being dunked, each of the liquids starts turning darker in color as they eat away at the crud and carbon, some more so than the others. We emulated water going through a cooler core by flushing each section with only the power of a garden hose after the two-hour soak.

Purple Power was able to remove nearly all the carbon and gunk from the cooler core in two hours. The plugged sections bottom two rows in photo were not immersed in solution. Also note the slivers from the hacksaw may make some of the tubes appear partially blocked.User Name Remember Me?

How to clean EGR cooler? No light or compressed air will pass through. I have soaked the EGR cooler overnight and also ran hot water through it but it is still badly clogged.

Does anyone have any suggestions on how to properly and successfully clean this part without ruining it? I believe this is partly due to the fact that Sullivan County, NY has very high sulfur content in the diesel fuel. What are the EGR coolers made of? They are designed to get hot enough to burn off carbonaceous crud but not melt the steel. I think they get too hot for aluminum though.

egr cooler cleaning

Caution: this WILL anneal the material. If it is some kind of special heat-treated steel it will revert back to a mild steel. My guess is it is a mild steel anyway NIST applet. What tire psi? Do I need nitrogen in my tires? I would first like to see if anyone knows of a way to clean the EGR cooler before I look into the modification. Don't clean it. I figure if it gets clogged who cares. Doesn't that just mean that less exhaust can get through and into the intake?

If the air flow is restricted from the exhaust manifold through the egr cooler the engine would not be breathing right. I will update when i find out. I used a section of straightened coat hanger, some cleaner and a power washer on my EGR cooler. A little tedious and very messy, but it came out fine.

Before was almost totally clogged. It went in the trash. Next time send it to me.

Cleaning the EGR cooler. Or Not!

I'll pay shipping. There wont be a next time. Im looking into the stealth egr and cooler delete kit from dieselgeek. Not looking foward for that job or price again. You have no idea how lucky you are that you did not pierce the tubes.

I see that ALL the time.The unexplained loss of coolant from your degas overflow bottle or cooling system. This can easily be explained when you have a bad EGR cooler - the EGR cooler is simply leaking the coolant back into the exhaust system, not outside of the engine.

Most people make an expensive mistake of ignoring this warning sign. They assume that since they can not find or see the leak, it must not actually be a leak. The longer they ignore it, the more coolant that leaks out of the engine and quickly creates warning sign 2.

All that white smoke coming out of the tailpipe is actually steam. As the coolant is dumped into the exhaust system, it quickly vaporizes and turns from liquid to steam and comes out of the exhaust. That "puking" of coolant out of your degas bottle is actually not a sign, necessarily, of a bad EGR cooler. On a Ford 6.

Click here for more information about this The EGR cooler is not getting enough coolant flowing through, so the coolant that is inside it quickly begins to boil. When the coolant boils, it creates high-pressure steam pockets which billow out through your degas bottle, pushing and forcing coolant out of the lid. The EGR cooler should be replaced in this instance because its already been overheated and stressed - and very likely to fail in the near future.

This method is easy to do and is a good "test" if you have any of the three symptoms above. To do this test, turn off your rig. When it is cooled down, remove the EGR valve and inspect inside with a flash light. If it looks wet, gooey or steam-cleaned, then you probably have a failed EGR cooler. Our EGR coolers are made with one overriding goal: reliability. We guarantee that our EGR coolers will fit, function and last so long that you will forget all about it!

That's what you really want, after all - a part so well made you never worry about it again. Stay Connected. So how do you diagnose a bad EGR cooler? What to do if you have a failed EGR Cooler?Cleaning the EGR cooler. Or Not! Mendel Leisk 'Orrible Oracle. I can't really recall, it flowed pretty good, when I got mine as-new-clean.

How does it look? Is it shiney clean, a little blackened? Borninblue Active Member. Definitely more than trickle. Power wash, soak it in oxy, and power wash again. Pdaddy and Mendel Leisk like this. Mine was so clogged that after a couple of days with the oxi clean soak wasn't getting it done, carb cleaner wasn't getting it done what I did was take a metal coat hanger and cut out about 8 inches and stuck it in a electric drill and shoved it down each hole to clean it out.

The sharp cut end made it through pretty easy and you could rinse after and look for light. Its a painful process but you should see light when you look through it or you just wasted your time. Next time I will start with the coat hanger cause the soaking doesn't cut it for me.

Pdaddy likes this. I used a Cable TV coax wire, found that just about the right thickness. Yeah you've got to open up channels if it's utterly clogged. I did start with brake cleaner.

Pdaddy Junior Member. Finally got unblocked with the hanger wire and drill and water runs through it at a high rate. A wire piece broke off inside, but was able to easily push it out with more hanger wire.

egr cooler cleaning

I don't know if this would have worked from the beginning as I surely have softened the deposits up with carb cleaner and oxi, but after my experience with the helpful advice received I would suggest just a couple of soaks and using a hanger wire or other wire with a drill if the egr cooler is all clogged up! Raytheeagle and Mendel Leisk like this.

I also power washed it too before drilling out with the hanger wire ;- SM-GU? Raytheeagle likes this. Oven cleaner would have been a lot faster and easier. I used a pressure washer and carb cleaner. It came out pretty clean from what I can tell. Much better than what came out of there. You must log in or sign up to post here.

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