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Old 09-07-2009, 02:22 PM
kerry kerry is offline
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Join Date: Jan 2002
Posts: 18,350
Caused usually by a failed shut off diaphragm. If your engine is shutting off ok, chances are it came from a failed shut off diaphragm what has since been replaced. Also could come from a failed vacuum pump diaphragm but I think you have a piston pump and not a diaphragm pump.
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