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Old 04-21-2011, 01:12 PM   #1
Registered User
Join Date: Sep 2008
Location: Fort Smith, Arkansas
Posts: 236
My Ride: 1999 328i 4dr
Oil leak related to a stopped up PCV valve???

I originally had an issue with my 1999 328i E46 dying on rather cold mornings. It never does it in warm or hot weather so I wasnt really worried about it. It would idle for a bit then die. After I restarted it it ran just fine. I have not noticed any rough idle or misfires. It may have had them but I just didnt notice. Recently I noticed a drop of oil here and there under the car. When I took it to my mechanic he at first thought maybe a rear main seal leaking due to it being at the rear of the engine. He removed the under cover, cleaned it pretty good and drove it some but it leakes so lilttle he says he cant tell for sure. Its not running out enough to have blowback on the trans or any other parts. Sorta implying it only does it when the car is stopped. IDK. He now says it could be this PCV valve stopped up and forcing oil out at times from building up pressure. Sounds logical to me since pressure need to escape somewhere. But I'm no mechanic!!!! I trust this guy but no one is perfect.

He gave me a price of $400 for (parts from BMW) and his labor. He said something about that also includes a hose in there somewhere. I'd prefer to do it myself if its not to hard. The rear main seal is a whole other story tho. lol

Thoughts on this being the problem???


1999 328i E46 with a M52TU - 2002 X5 E53 3.0i with a M54 - -

Last edited by CrazyOneToo; 04-30-2011 at 12:50 PM.
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