Where is this leak coming from?
Le Mans Master
Joined: May 2004
Posts: 5,866
Likes: 60
From: Hellinois
Finalist 2020 C4 of the Year - Modified
I checked everything and here is what I found:
1) Valve cover was tight but I noticed oil toward the backside of the cover.
2) Oil pan was moist but not the source of the leak.
3) Oil pressure switch was dry.
4) No obvious leak from the intake.
5) PCV valve functioning but changed it anyways.
6) Tracked the oil on the valve cover to a loose crankcase ventilation tube; put some teflon tape on it and shoved back in, put a hose clamp on the other end.
The smoking stopped and I think the loose ventilation tube was the major contributor but I will keep inspecting it.
1) Valve cover was tight but I noticed oil toward the backside of the cover.
2) Oil pan was moist but not the source of the leak.
3) Oil pressure switch was dry.
4) No obvious leak from the intake.
5) PCV valve functioning but changed it anyways.
6) Tracked the oil on the valve cover to a loose crankcase ventilation tube; put some teflon tape on it and shoved back in, put a hose clamp on the other end.
The smoking stopped and I think the loose ventilation tube was the major contributor but I will keep inspecting it.
Thread Starter
Melting Slicks
Joined: Jun 2004
Posts: 3,253
Likes: 2
From: Castro Valley CA
From what you're describing it sounds as if you may have blowby pushing oil out of the valve cover openings. Is the oil on the top of the cover running down or does the oil show under the cover? If it's more on top then your rings are worn bad enough that you are getting blowby.
Hopefully, I will be able to put this fix to the test this Sunday and give it another 2 hours of track time at Thunderhill; I will do my best to maximize the blowby
Racer
Joined: Mar 2008
Posts: 254
Likes: 0
From: Perth W.A
Mine is burning oil too, seems to be only at back! thinking the manifold or oil sender thing!
but now that i remember my valve(forgot the name- middle of inlet manifold) is not connected! this can cause crankcase pressure right?
Can i just hook up a vacuum line to it? as the black plastic connector that routes the vacuum hose to it from the vacuum ball near front left light, is broken! :s
What is the purpose of this black connector! why not just connect vacuum straight to the valve?
thanks
but now that i remember my valve(forgot the name- middle of inlet manifold) is not connected! this can cause crankcase pressure right?
Can i just hook up a vacuum line to it? as the black plastic connector that routes the vacuum hose to it from the vacuum ball near front left light, is broken! :s
What is the purpose of this black connector! why not just connect vacuum straight to the valve?
thanks
