EGR Cleaner - Is there such a thing ?
 

Got an EGR problem and wondered if there was really a fuel (diesel ) additive that will do the job? Thanks

What is the problem with the EGR? Assuming its clogged, then you need to clean it first or maybe even replace it if its beyond cleaning.

Fuel additives won’t solve an EGR problem. There’s a reason why there’s a problem with it in the first place (short journeys for example).

Cleaned many ! Its a dirty old job.

But i prefer to bin them and use a "Delete " .cars run so much better without .



if you want to clean .Remove . put in a container with petrol . Soak maybe over night .using wooden spoons etc .Scrape off the hard crud .Then attack with anything to clean the rest off .Check the piston is moving correctly .Refit .

Remove, clean it manually with carb cleaner.
Its a stinking job. But not a hard job. Lots of how to's on youtube.
The hardest part is putting the right angled pipe back on to the inlet mandifold.



Then Send off your ECU to be mapped out so it doesnt use the EGR again.
Undetectable by MOT standards.

I just blank off with a section of coke can .had one diesel with it all removed and mapped out etc .But just the blanking makes a great difference

It will throw a code. Works well on euro 3, not on the p3's without the ecm having a hissy fit. On my d24tic? I had to use a golden Virginia tin. Burned through the tin on the coke can!

Fair Play, had no idea about the code issue .

Not as a long-term fix. But it's usually pretty straightforward to remove the offending valve and free up the sticking mechanism by cleaning off the soot build-up; I had to do this a couple of times with my previous 2005 Honda Accord diesel (but then I did take it up to almost 200k miles).

Please don't block off the valve to permanently stop the flow. This is not only a massively anti-social thing to do (the NOx emissions will multiple by several orders triggering respiratory problems such as asthma for affected individuals in the area) but it's also illegal to tamper with vehicle emission control systems... while it's true that currently the MoT emissions test does not check for excessive NOx, MoT testers are not idiots and can often spot that something (whether from a coke can or tobacco tin) has been bodged into the EGR system to block it. The fines can be quite large.

Thought as well, Where to stop cleaning?

Thankfully the greatest of buildup is around the mixer and the elbow,

I've had the inlet manifold off to clean out when I did me flaps. If you REALLY want to be anal, You could take apart the inlet manifold. But unless you have trouble with the swirl flaps jamming up and leaking, Going further than the elbow realls isn't worth it. Stuff hardly buuilds up on the intake manifold.



What jams up the flaps is EGR gunk. And I thank the swedish gods that, by the time it gets that far, its mostly solid and not a gooey mush like what my Merc engined 300c was.



Thats when you do have to go in deep and become clinical with EGR gunk removal.

If you do go that far, give me a shout and I can provide you with one or 2 pointers.

Most cannot even see a EGR with engine covers on etc !! And using a delete kit , no one would be the wiser .Easier on older cars with no codes to throw . Never worried about the legalities