240 engine backfire


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Posted by Rob on Tuesday, March 11, 2008:

have a 240 w/ fc420V-FS00/40610. cust. had gradual increase in backfire on start, until eng. was no start. repl. ignitor and coil. checked valve lash, cam timing-OK R&R head and resealed valves (now passes leak down test), fuel ok- eng. seems to backfire thru carb while cranking- possible camgear? Anyone have the same prob?


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