Thread: E420 Idle Mystery
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  #19  
Old 09-02-2008, 09:00 PM
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dproudfo dproudfo is offline
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Join Date: Jul 2006
Location: Saint Paul, Minnesota
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Spark plug gap...
I'm also considering widening the spark plug gap on the NGKs to around 1mm to help smooth out the idle. Is there a major caveat to this?
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