I am having all sort of trouble with my sons moped, As far as keeping it running. I have taken the motor off to get to the carb and cleaned it and put it all back together. It took right off running for about 5 minutes then it died again. It will idle all day long, but once I give it some gas it bogs out. If I let off the gas, it is fine. Go figure. If anybody can give me an idea, that would be GREAT!!! I have a listing looking for a carb right now, if someone has one let me know.