Smoke and oil coming from exhaust tail pipes
01-17-2015, 02:55 PM
#1
AudiWorld Junior Member
Thread Starter
Smoke and oil coming from exhaust tail pipes
I have a 2001 A6 2.7T. It is smoking and oil is leaking from the tail pipes. It doesn't start smoking until after the engine is completely heated up though. It's losing oil pretty quickly and I am also getting oil on my spark plugs. I'm not losing any coolant, getting coolant in my oil or oil in my coolant. I originally thought it could be the pcv breather hose assembly because it was really clogged when I took it off. I bought a new one and still have the same problem. Some people have told me it is a bad turbo seal. Valve gaskets or piston rings maybe? Anyone have any input?
Last edited by DanXstatic; 01-19-2015 at 05:41 PM.
01-17-2015, 03:06 PM
#2
AudiWorld Super User
I have a 2001 A6 2.7T. It is smoking and oil is leaking from the tail pipes. It doesn't start smoking until after the engine is completely heated up though. It's losing oil pretty quickly and I am also getting oil on my spark plugs. I'm not losing any coolant, getting coolant in my oil or oil in my coolant. I originally thought it could be the pcv hose because it was really clogged when I took it off. I bought a new one and still have the same problem. Some people have told me it is a bad turbo seal. Anyone have any input?
01-17-2015, 03:46 PM
#3
AudiWorld Junior Member
Thread Starter
Is there more than one pcv valve? There is one in the breather hose assembly that I just replaced. I'm not driving it at the moment. Just test drove it after I replaced that hose assembly.
01-17-2015, 03:53 PM
#4
AudiWorld Super User
Someone just posted a pcv diagram for the 2.7, I'll see if I can dig it up and post it too.
01-17-2015, 04:16 PM
#5
AudiWorld Super User
Read this thread https://www.audiworld.com/forums/a6-...4-2-a-2877325/ the last post is from some dude on the forums.
01-17-2015, 04:41 PM
#6
AudiWorld Junior Member
Thread Starter
Read this thread https://www.audiworld.com/forums/a6-...4-2-a-2877325/ the last post is from some dude on the forums.
This is the hose assembly I just replaced.
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01-22-2015, 12:12 PM
#9
Turbos maybe - but given the relative rare situation where a turbo goes, I'd be wondering about valve stem seals. If these go, you will leak oil from the head into the cylinder - and I would expect these before turbos, although both situations seem to be relatively rare events.
If you can jack the car, you could pull the hoses and see how much oil comes out of there - I've seen a good amount come out of them on turbos that are still OK - but if you get cups of it coming out...that would point toward the turbos...
If you can jack the car, you could pull the hoses and see how much oil comes out of there - I've seen a good amount come out of them on turbos that are still OK - but if you get cups of it coming out...that would point toward the turbos...
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