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Old 05-27-2012, 08:51 PM   #5
jasonbimmer
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Join Date: Sep 2011
Location: Omaha, NE
Posts: 5,686
My Ride: 2001 BMW 330xi
Quote:
Originally Posted by farukh View Post
Thanks for your fast responses guys! I just changed the spark plugs to NGKs... but it didn't solve the problem :/

One of the guys at Auto Parts said that it is back firing too... I don't know what that means.. gonna do my research now.

I also suspect that vacuum leak. What are the places where the vacuum leak is possible besides intake boot and intake tube?
its back firing inside the intake manifold.
mostly either CCV or intake boot.
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