Few spots of soot/oil on tailgate?

[Cossie-boy]

Hi all

Had my Leon FR TDI 150 a couple of years and its been pretty much faultless...apart from...a little bit of smoke on start up and under heavy acceleration it can chuck a bit out then usually clears. Its done about 80k now.

Ive been around diesels for quite a while so know to some extent this can be normal with them.

My only concern is after giving it some there are often small little black spots of what I can only think soot from exhaust or oil? I must say when last changing the oil it was quite low so maybe it had disappeared on start up and heavy acceleration

It drives spot on and most of a time I pootle around getting stupid MPG so can understand it getting a build up now and then.

Any thoughts on what it could be?

Cheers

CB

 

[Bigjohn84]

Maybe clean your EGR valve mate it's prob cloged with ****, all diesels blast out smoke when you put your foot to the floor, not a lot of smoke but some, cause it's a diesel u will get a lot of soot build up so ur best cleaning it

 

[Born2bwild]

Maybe clean your EGR valve mate it's prob cloged with ****, all diesels blast out smoke when you put your foot to the floor, not a lot of smoke but some, cause it's a diesel u will get a lot of soot build up so ur best cleaning it

I'm on 90K and decided to clean my EGR valve and couldn't believe the carbon build up so well worth doing at your mileage especially if you do a lot of easy driving. Only thing I would add is that your intake manifold will be similar (at least on the inlet side) so take care when removing it

 

[Cossie-boy]

Cheers guys

I shall have a look at the weekend then, guessing its best to take it off altogether to clean?

 

[Born2bwild]

Exactly, no point in doing one and not the other!

 

[Cossie-boy]

Indeed, sorry what I was meaning though is take it off the car? There are some videos on you tube where people just disconnect the hose, spray a load of cleaner in then rev the car crap all through the car, surely that cant be good for the car?!

 

[Bigjohn84]

You can do it that way if you want, it's a diesel so it shouldnt make I difference lol I'd take it off to be honest least you no it's cleaned properly

 

[Muttley]

You are trying to clean off baked-on carbonised oil+soot that has been building up since the car was new. You are not going to make much impression with a can or two of spray.

Best to remove the EGR valve and the inlet manifold, making sure that no flakes drop into the one inlet valve that is open, and then clean both valve and manifold. It will take some time and a bit of elbow grease.

Ideally you would want to clean the ports in the head as well, but do the ones with closed valves first, then turn the engine over by hand to close the last ports.

 

[Cossie-boy]

Hi guys

Ok so this morning I have popped the cover off to have a look and have found wet oil on the EGR, it appears to be coming from the round vacuum? bit on the top, and can see its been dripping down :/

Any thoughts?

I shall take the hose off and look inside to check as thought maybe its caked full of crap and oozing out?

One thing though, my baby still pulls like a train and gives me insane mpg every day!

Many thanks in advance

CB

 

[Burnzybubbles]

Definitely sounds like a crappy egr, the oil is carbon/oil sludge mix pouring out, you'll get better mpg if you strip the inlet side down, clean everything and delete the egr, providing your car isn't euro 4 or usually around a 53 plate then you won't get an EML light.

 

[Cossie-boy]

Great thanks, I am hoping so!

Mines a 55 plate registered 2006 so one of the last in that shape.

Does the EGR delete make it any quicker? when I said insane mpg I meant in a good way, lol

So just to clarify, the EGR is bolted to the inlet manifold near the bulkhead? I had an A3 2.0 TDI 170 Quattro once and im sure the inlet was in the front of the engine so throwing me a bit!

Cheers

CB

 

[Burnzybubbles]

Removing the egr on your car will bring an EML light up unless you have it mapped out, you should be able to reduce flow through vcds or you could on the pd130 engines anyway, not sure of its location on the Leon but it'll be obvious, removing the egr and cleaning the inlet tract will improve mpg and make it a bit quicker, or at least more responsive.

 

[Cossie-boy]

Hi all

So bizarre, since I started this post, I ended up selling the car, bought a MK2, didn't get on with it and now have another MK1 FR 150 with 57k on clock...

However, I have noticed I am getting these tiny spots of black oily/soot on the tailgate!

The car has been mapped so chucks a bit of grey out, but it had a recon turbo about two months ago and the bloke I bought it from was a VW mechanic and said he had cleaned the EGR, not sure about inlet manifold though.

So is this common thing? anything to worry about? what should I do?

Cheers

CB

 

[Bigjohn84]

All diesels will throw out black spots now and a gain, stick some Wayne's full system cleaner in the fuel next time you fill up, thrash the arse of hear for a few mins and blast all the **** out the car.

 

[Cossie-boy]

Cheeers, that Wynns Xtreme diesel system cleaner says for Cr engines but guess its ok?

 

[Bigjohn84]

dont buy the extreme one that over £10 buy the purple bottle Wayne's injector cleaner or full system cleaner, £6/£7

 

[Cossie-boy]

I reserved the Xtreme for £5.24 at Europarts or not a good one?

 

[Cossie-boy]

http://www.eurocarparts.com/ecp/p/c.../diesel-system-additives/?555770780&0&cc5_862

With 25% off code

 

[Bigjohn84]

That's fine mate, it will be fine

http://www.wynns.eu/wp-content/uploads/2016/04/w31563-diesel-turbo-cleaner-e04.01-en.pdf
http://www.wynns.eu/category/consumer/consumer-diesel/

 

[bruceR]

All diesels will throw out black spots now and a gain, stick some Wayne's full system cleaner in the fuel next time you fill up, thrash the arse of hear for a few mins and blast all the **** out the car.

This cleaner is for the fuel system and not the air system - which the thread is all about
As said above these diesels will chuck out smoke/soot if just driven normally most of the time. The best way to drive these is to thrash it once a week, this will ensure that any carbon build up is burnt off before it gets the chance to coke up too much.