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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Valve cover gasket change?



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      05-15-2012, 11:30 PM   #1
Alejin3
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Valve cover gasket change?

When should I change my engines valve cover gaskets?
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      05-15-2012, 11:48 PM   #2
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When they leak...
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      05-16-2012, 08:54 AM   #3
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Isn't the whole point of maintance to avoid such things? I ment if there is a BMW specification which states that such procedure should be done when vehicle has xxxxkm
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      05-16-2012, 09:05 AM   #4
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Isn't the whole point of maintance to avoid such things? I ment if there is a BMW specification which states that such procedure should be done when vehicle has xxxxkm
There is no official service recommendation for the replacement of the valve cover gasket. It's meant to be replaced only if fails and begins to leak.

Mine most likely would have never of leaked if it wasn't for the cover bolts snapping.
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      10-24-2012, 07:15 PM   #5
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i need mine replaced and i need help. im new to the forums and i have to post a certain number of posts up before i can start a thread i guess. my car is new this is my first problem
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      10-24-2012, 07:32 PM   #6
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from everything I've read on this forum, there are several hours of labor for the vcg, so probably not a cheap preventive maintenance project.

there is a DIY on the site for eccentric shaft sensor that also describes DIY for the vcg:
http://www.e90post.com/forums/showthread.php?t=697252

also read on the forum that some of our cars will leak if left sitting long enough, with the slant in the engine. This may have been the case for me as I was showing some signs of leaks from vcg but no real loss of oil, after my car sat for two weeks. Wiped off the oil, hasn't come back.
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      10-26-2012, 11:53 AM   #7
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There is no need to do this preventative...when the gasket starts to seep, get it done...AT AN INDY SHOP!! The dealer will charge you $1000+ for this...you can find an indy shop to do it under $500. They leak because the bolts are breaking...DESIGN FLAW that BMW should have fixed!

I am going to caution those of you who, like myself, are amature DIY'rs. I have done various low level MX jobs on my E90 330i, such as thrust arm replacements, brake/rotor job, filters, spark plugs...etc.

Yesterday, I attempted the VCG change...and failed (I had to have it towed to a shop for them to finish it). There were several complications. First, there were two bolts that broke, hence the leaking. One was broken off down in the head. I didn't have the proper tool to remove it...it was lodged in there good and wouldn't come out without and extractor tool. Second, the oil separator hose that come out from under the Intake manifold and connects to the valve cover is VERY VERY brittle and broke when removing it. The challenge, at that point, is getting the other end disconnected from under the intake manifold...and the associated wire which connects WAY under there. Third, the wire connectors (you have to remove several) are like working with potatoe chips...they are so brittle that you cannot avoid breaking them when they come off. Lastly, torquing the bolts on the VGC without a digital torque wrench with an angular mode would be nearly impossible. The back bolts have little to no room, so getting an angular dial in there is a no go.

This one, in my opinion, is worth letting someone else do.
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      10-27-2012, 01:00 AM   #8
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When they leak...
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      10-27-2012, 01:29 AM   #9
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2006 BMW 325i  [5.00]
Yeps, when they leak take it to an independent shop. Best thing to do as a preventative measure is to start shopping around for prices. I was able to get it done here at a local shop for $600. Dealer quoted $1200.
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      10-27-2012, 01:53 AM   #10
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When they leak...
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      10-27-2012, 03:36 AM   #11
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You'll notice it upon a cold start mostly when there's smoke coming from the engine. Usually happens between 80-100k miles. Go to a local dealer to get it fixed.
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