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Old 03-05-2012, 03:21 PM   #5
sho305
Vegas modded 420
 
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Yamaha
 
Join Date: Jun 2009
Location: West MI
Posts: 15,433
Default Re: g16 runs good cold but not when hot

Are you sure the fins on the cylinder/head are clean, if they get plugged with dirt it will overheat. I would check the spark when it does it, could be a coil going bad or ignition part.
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