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-   -   Oil leak - E46 M3 (http://forum.e46fanatics.com/showthread.php?t=947657)

cheerio89 09-29-2012 04:27 PM

Oil leak - E46 M3
 
I replaced my alternator 2 days ago. Today Im driving and the car starts smelling inside and a bunch of smoke behind me. I come to work and there is a puddle of oil that my car created! Im not sure exactly what is leaking yet. I'm pretty sure its not the valve cover gasket. Maybe anyone has had a problem like this and can tell me where its coming from before I take everything apart? Here is a video: http://www.youtube.com/watch?v=GpeQBCUFLmo

Thanks!

jhaurimn 09-29-2012 04:52 PM

Not really sure ... You are sure it's not the valve cover gasket? I think I've heard that the vanos solenoid can leak oil, perhaps that is what it is. Hard to tell what I'm looking at from your video

Edit : what did you take off when replacing your alternator ?

cheerio89 09-29-2012 05:59 PM

Air filter bucket, the plastic right next to the alternator, and the belt. Also took of the hose from the radiator it was in the way. Reference pic: http://imgc.classistatic.com/cps/bln...457db3_20.jpeg

cheerio89 10-01-2012 07:44 PM

http://i.imgur.com/4LdRa.jpg
Here is a picture from underneath

emax 10-01-2012 08:09 PM

Clean the area and use UV dye to find the leak. Anything else is guessing.

cheerio89 10-03-2012 09:36 PM

I didnt really have access to UV dye, but I did find the problem!! :)

http://i.imgur.com/3BWQM.jpg
This is the Vanos oil pressure accumulator. The line goes to the Vanos system showed the below picture. The line is under high pressure and was leaking oil on IDLE and spraying on high RPM (had someone rev it for me while I was under the car).

http://i.imgur.com/w26AE.jpg
This is where the line goes.

Ordered new line: http://www.ecstuning.com/BMW-E46-M3-S54_3.2L/ES23258/

jhaurimn 10-04-2012 12:42 AM

Glad you found it ! Looks like it was leaking pretty good.

emax 10-04-2012 06:41 PM

Good news. BTW you can get dye at your local auto parts store or online.


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