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.