Electronic Mail Correspondence Date: 11/7/95 Time: 4:07 PM Subject: RE>What's a Backfire Ref: In general I understand a backfire to be any instance where the mixture in the cylinder ignites and either the intake or exhaust valve hasn't yet closed. This then means that the ignition can vent through either the intake or exhaust valve, hence the intake backfire (through the carb (dangerous fire possibility?) or FI a metering hardware ( expensive breakage possible of air flow metering stuff) or via the exhaust system (rough on cat converters and or mufflers). My understanding is that the gross causes are thus - o Ignition timing off o Valve timing off o hot cylinder deposits igniting the mixture instead of the spark plug. Maybe someone else out there has more specific suggestions on where to start/look to fix your backfire problem. Harvey
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