I'm in a spring cleaning mood and have all week to do it. I want to clean my EGR valve and possibly the inlet manifold, I had a look inside the EGR and it looks pretty 'gunked' up. This stuff is supposidly good and doesn't require disassembly.

Can anyone confirm that it's as good as it sounds and were any improvements felt in the performance or noticed on fuel economy?

Can anyone possibly write a brief guide to removing the EGR and Inlet for proper cleaning.

Cheers guys

ive used it and it is good. Give it a wipe round and the gunk will come off.

cant help with a guide as mine is a petrol (cleaned throtle body) noticed improvement straight away but a good tip is to not remove anything unless you have to as you need it all reset with vagcom if you do.

Not really noticed any improvement in mpg though.

Edited 5 April, 201115 yr by ians1386

will not clean egr valve....

removal req.

What about the inlet Jase, if i remove the egr, then spray direct into the inlet let it soak a bit while i clean egr, when thats done i can fit it back on and take it for a drive. Anything to watch out for when i remove the egr though?

I dont think cleaning the carb would effect mpg too much but the egr controls some of the emissions as such by recirculating like 10% of the bad gasses back into the engine to be burnt up making a greener car. Thats my understanding of it, as it becomes gunked up it doesnt work aswell and air flow starts becoming restricted and with it mpg is reduced because whatever fuel was lurking with the gasses doesnt recirculate therefor more fuel used. Argghh confusing bull***t lol

What will happen if I spray the carb cleaner in bursts into the air intake, obviously remove the MAF first, will it damage the turbo? I'm not 100% on where to spray the carb cleaner into, a running engine will probably be more effective at removing some of the deposits from the egr and inlet surely? If I don't spray direct into the air intake, then I will spray into the EGR into the end the intercooler is connected to. Is that correct?

Heeeeelp please lol, need to get this clean with little fuss, I have no problem in removing the egr valve to clean that but would like to clean the intake etc without having to remove.

please don't spray carb cleaner into a running engine :wonder: if it were a petrol engine it would almost certainly cut out, but diesel might just cough and splutter for a while, you are far better off removing parts to clean them tbh

yes... inlet isn't too important to clean and is a pest to remove...

i'd just clean the egr valve

it will be mega gunked up...

i wonder if EGR cleaning will become a service item in the future, as there basically worthless after 20/30k

yes... inlet isn't too important to clean and is a pest to remove...

i'd just clean the egr valve

it will be mega gunked up...

i wonder if EGR cleaning will become a service item in the future, as there basically worthless after 20/30k

Is there much performance to be gained from cleaning a messy EGR? I really don't think mines ever been done, and i'm touching 130k now :p

Cleaned it all in the way it said to on the can, for direct injection engines spray into the air intake while running a few times, let sit at idle, put back together the air supply, then spray into the manifold (through the EGR) while running with someone holding down the throttle at about 1500-2000 rpm. Did it to my dads and my car, they're both fabia vrs, hes is on 77k and mine is almost 110k, it made a lot of dirty sooty smoke for the first 20-30 seconds when spraying into the manifold, it then cleared up, inside of egr looks cleaner and engine seems to be smoother (probably something to do with the product cleaning the gunky injectors) have noticed reduced black smoke on mine which didn't smoke too bad, made quite a difference to my dads, he's did smoke a lot, both made for seemingly smoother running (although not a huge difference) I haven't really tested for a comparison in MPG but I guess whatever product is left in the engine is still breaking gunk down so it's probably going to take a couple of runs to clear as much of the soot/gunk as the product allows. Will repeat every 6-8 weeks or so as I have faith in the product further clearing some of the gunky crap from the inlet and egr etc. Before I sprayed direct into the air intake I checked that the product doesn't damage the turbo, I found a Wynns PDF on my phone that explains what each product does, which states it won't harm the turbo, but now can't find it again.

Is there much performance to be gained from cleaning a messy EGR? I really don't think mines ever been done, and i'm touching 130k now :p

+1

This fella sprayed the stuff into his egr..

carb cleaner