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Old 11-04-2008, 07:57 AM  
Rick Vessell
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Join Date: Jan 2002
Location: Mars
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Have you checked your exhaust and pipe gaskets? Tank lid seal? Fuel lines? Head bolts? All can cause an air leak and create an issue like you described. The back fire can also be from over rich settings to compensate for the air leak which will dump a large volume of fuel in the engine at start up.

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