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Re: F12 needs constant choke
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Posted by glennster on June 05, 2007 at 10:44:55 from (76.224.16.173):
In Reply to: F12 needs constant choke posted by Wisconsin Erick on June 05, 2007 at 10:26:52:
could be lack of fuel, vacuum leak, valves not seated or bad compression. do a compression test first, pull all the plugs, hold the throttle wide opn and check each cylunder, write down the reading for each cyl. then squirt a couple pumps of oil in each cyl, roll the motor over a few times and re test. should be within 10 psi, all cylinder should be pretty close, maybe around 90 psi or so. if compression jumps way up after oiling em, rings are worn, if it doesnt change and you have a low one, could be valves or hole in piston. to check for vacuum leak, start the tractor and spray carb cleaner around the intake at the block and at the carb to intake gasket and look for change in engine sound. that would show your vacuum leak.
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