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Old 07-21-2012, 06:45 PM
huntnfish08 huntnfish08 is offline
Motorized Bicycle Member
Join Date: Jun 2008
Posts: 22
Default Re: Fourstroking @ WOT... help.

Z2-80 BGF engine, "80cc"

I've got over 100 miles on it before it ever started this fourstroking business. I could wind the engine all the way out, pedal faster to get more RPMs and then hold those R's. Now I get to about 28-29mph and it stumbles, picks the speed up and stumbles again. It's driving me nuts not knowing why.
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