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      06-15-2013, 11:17 AM   #9
PhaseP
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Drives: 325XI
Join Date: May 2010
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Quote:
Originally Posted by Beefy View Post
I have replaced both the vacuum hose (check valve) and the gasket, but the problem still there, I don't know what to do
Did you add some sealant RTV to the gasket groove? I had used this one

http://www.permatex.com/products/pro...t-maker-detail

and waited a while before starting the car until it cures. Mine is still good, no vacuum lost in the mornings.

If this doesn't fix you then have vacuum leak some where else.