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Old 11-19-2013, 04:27 PM   #2
Lefty   Lefty is offline
 
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Join Date: Jan 2013
Location: midwest
Posts: 93
Check for bad connections would be the first that comes to mind. Loose boot cap on the coil wire loose connections on the coil itself, bad or loose ground wire from motor to frame etc.. Also CDI may be overheating to close to something giving off a lot of heat, Bad Pickup coil(which can be tested). could also be you got a bad coil and or CDI don't forget all this stuff is made in china and some or better quality than others.
could also be a bad stator as well(that can be tested).

Could just be a bad plug internal crack.
Lefty
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