back fire

Old 08-15-2007, 08:08 PM
  #1  
zano
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Default back fire

just got my motor running when i bring it up to about 3,000 rpm then let off the gas it back fires thru the exhaust on the drivers side every time just 1 bang . anyone know what would cause this?
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Old 08-15-2007, 09:47 PM
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bjuice
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cold outside air being pulled in from the outside.check all your collectors,header flange',collector flanges...check your primary header tubes for small cracks and breaks,,,,,,,,if your exhaust has an exterior leaks it (exhaust) will act as a vaccum and pull this outside cold air in causing the disturbance of the hot flowing air in the exhasut ...therefore making a backfire sound...please check your exhasut with a magnafying glass if you must..your problem will be in your exhaust somewhere.


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Old 08-16-2007, 05:17 AM
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zano
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thanks brian i do have a leak where the header meets the collector i can here it i just figured no big deal i'll fix it next time i have it on a rack but i guess i better fix it know thanks again zano
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