Thread: Backfiring while driving, not while sitting still?
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Old 11-17-2008, 07:55 PM
  #14  
suicidebomb
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RACING JUNKIE
 
Join Date: Jul 2007
Location: Independence, Missouri
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A lean mixture can do it, so can a bad distributor cap. Vacuum leak also can. If you have a vacuum gauge, and can hook it to manifold vacuum, put it on and see what it reads at an idle. Valve lash set too tight?
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