back fire two are threem times
3 Answers
How old are you spark plugs and wires? Distributor Cap and rotor?
Timing off, exhaust leaks.
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If it's backfiring like a gunshot report when you take your foot off the accelerator pedal or a few seconds after you shut off the engine it's going to be the diverter valve for the A.I.R. system. Hope that helps! Jim