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Old 07-27-2017, 09:18 AM   #25
emf
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Join Date: Mar 2013
Location: Hudson, NY
Posts: 568
Default Re: Will not start after engine rebuild

That 'humph' may be the starter fluid igniting, or is may be the engine is kicking back due to too much spark advance. I would recheck the timing and use a light if necessary. you could pull the plugs, if necessary to get the engine to spin. Be sure to leave the pick-up for the light on the #1 plug wire. Leave the wires on the plugs laying on the head. Re-check your compression numbers...

Frank
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