Thread: exhaust popping
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Old 12-10-2012, 11:24 AM   #2
nwarren9
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Yamaha
 
Join Date: Sep 2011
Location: Flint Mi.
Posts: 248
Default Re: exhaust popping

possible a bad plug or plug wire? had something like that with a new plug for some reason the porcelain where it came in contact with base came loos which when compression stroke it would move up very slightly and on down stroke it moved back to the original poison this movement was very very slight. Also check obstructions in exhaust.
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