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Old 02-06-2002, 07:22 AM
Sgt. Dave Sgt. Dave is offline
Grease Monkey
 
Join Date: Nov 05, 2001
Location: Eastern Oklahoma
Posts: 359
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If the AIR diverter valve is bad, or there's a leak in the system, it will cause it to backfire in the exhaust. Disconnect the air line to the exhaust manifold, and cap it. Should cure the backfire.
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