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Old 07-23-2012, 08:30 AM
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Pilotgeek Pilotgeek is offline
Motorized Bicycle Elite Member
Join Date: Apr 2011
Location: Green Bay, WI
Posts: 403
Default Re: Fourstroking @ WOT... help.

Try running without your gas cap once. A few of them don't vent right from the factory (including mine). A smaller jet may be in order. You may want to do a plug chop to check jetting. I needed a smaller jet after break-in.

Also, if you have a stock engine, are you sure you're doing 28-29mph? That's about as high as I would want to rev it with a 44t sprocket. When I first got my speedo, I set it for the stock 26" wheel size, but it was too fast by about 3mph according to gps. I had to measure the circumference and enter that into my speedometer.
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