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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 01-20-2012, 05:16 PM   #1
Kboyd422
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Join Date: Jan 2012
Location: Columbia sc
Posts: 1
My Ride: 1999 e46 323i
Need help with oil leak, middle of valve cover

Ive tried replacing the vcg and grommets, oil puddles in the center of the valve cover, getting into the ignition coils and dripping down to exhaust. Seems to me like its leaking from the 4 center valve cover studs, i have to vacuum the oil out once a week and as of today broke a stud trying to tighten a bit more..tried all I know and cant find anything online..have photos.please help

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Old 01-24-2012, 01:36 PM   #2
DenverSooner
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Join Date: Dec 2011
Location: Castle Rock
Posts: 184
My Ride: 2014 328d xDrive
I changed my VCG out last weekend. When I re-onstalled, I was careful to tighten the outer studs first, in a criss-crossing pattern (like you would do on a wheel) and then tighten the 4 center bolts. I also did about 5 passes total in this same pattern, wanting to ensure that the gasket was being seated evenly throughout. I stopped tightening when the stud stopped, as it contacts witht he metal bolt below and will go no further. If you broke a stud, you were going too far. Also possible that your gasket didn't seat correctly. Just an FYI...
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Old 01-26-2012, 08:08 AM   #3
chrislasser
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Join Date: Jun 2007
Location: South Florida
Posts: 32
My Ride: BMW 330 xi
Check your vanos line (oil line) or your oil filter housing gasket
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