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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Tue, Dec-04-2018, 08:34:11 PM   #31
Drewster
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Default Re: Warped Valve Cover?

Quote:
Originally Posted by hunter6 View Post
To add to the conversation...I have had the VCG leak on three occasions. Once a year after a very reputable shop did the 30k mile valve adjustment (they re-did the gasket free), another at about 50k miles and the VCG was replaced in Germany by a BMW dealership service shop. The third leak has occurred at 66k...about a year after the 60k valve adjustment. Reputable mechanic just diagnosed a warped VC. I believe it to be true. I canít account for 3 VCG leaks with any other explanation.

Thoughts?
"BMW Service Shop" is that a BMW dealership using BMW parts? Or a shop in Germany that works on BMW's?

The answer is the same - it's highly unlikely that your valve cover is warped, but a *high* likelihood that the gasket is aftermarket and is destined to leak.

If an OE gasket was properly installed and leaks after 10k, I would ask to see the evidence, but *maybe* you're the first to actually have a valve cover issue... but I hate to see your cylinder head if that's the case.

As a side note, a leaking CPV is also commonly mis-diagnosed as a valve cover gasket.
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Discussing Warped Valve Cover? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)