i got my 33cc pusher running again, turns out the needle in the carb was jammed, i fixed it and went out for a ride, i was running the proper 25:1 mixture, had the jet tuned and checked the plug, it was not running to lean, it was running mint, i was pulling about 30kph on flat ground, mid-high rpms, not over revving, then it just went crunch, bang and alot a smoke, i stopped and when i went to pull it over i realized it was done, what happened was the wrist pin bearing let go and put rollers all over the crank case and cylinder, its punched, im picking up my 1976 moby moped tomorrow, so i will have some reliable transportation, sigh im not having much luck lately, have a look at the pics, let me know what would cause this? i think the problem was that it was an old Chinese engine that just let go,
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