Bimmerfest - BMW Forums - View Single Post - Loosing my head, looking to get help from community. Secondary air flow
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Old 10-11-2011, 05:25 PM
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roadfrog roadfrog is offline
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Location: Chilliwack, BC Canada
Join Date: Oct 2009
Posts: 1,096
Mein Auto: 2003 745i
I spoke to my Indy about the Seafoam thing. He said they tried this remedy several times without success. He said the carbon is so stubborn and hard that only honing out will clean properly.
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