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      08-30-2018, 05:03 AM   #13
rjahl
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Drives: Z4 35is
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2012 Z4 35is  [0.00]
Why are we assuming the valve cover is cracked? This gasket is a really common failure on the N52. Dries out and starts to leak. Make sure you change the gasket on the VVT motor when you are there.

I also changed my spark plugs while there but not necessary.

Don't worry about Dust, dirt sure. you should clean the motor a little before you work on it anyways. Who likes to work on dirty engine parts?

The plastic valve covers are prone to PCV valve failures and a few have cracked. If you are doing the work yourself, you could consider have a new cover available and use it if you need, return other wise.

There are a few good write ups the describe the gasket change in detail. Pelican Parts
used to have on on their web site but there are a few others, Google.

You should not need a computer to reset the VVT adaptions and it's good advice to have a little sealant around to hold the gasket into the cover while trying to mount the cover. No need to change the bolts with the plastic covers.

good luck
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