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Old 06-07-2007, 11:01 PM
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Rwillia4 Rwillia4 is offline
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Join Date: Aug 2003
Location: San Diego, CA
Cobra Make, Engine: BDR #455, KC427W, TWM-FI
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backfiring is caused by two things happening: 1) an exhaust leak allowing oxygen into the exhaust, 2) unburned gas in the exhaust. Te two things causes a flame in the exhaust (backfire). The fixes are stop all the exhaust leaks or lean out the mixture (which could cause other problems)
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