wont rev

  1. S

    PLEASE HELP. 80cc kit will NOT Rev w/ no power

    Hi guys, I have tried all sorts of resolutions and need help. I installed an 80cc 2 stroke bicycle engine kit installed. The problem: The engine will start right up. Once the engine is started I cannot get the bike over 15 mph. It 'lugs' along, and the engine will not rev high. when...