higher rpms

  1. J

    Choke does nothing, can't find vacuum leak...

    So I will preface this question by saying that I have had a lot go wrong with my bike lately and there may be multiple issues at play here... So the problem that I am having is that the motor is idling high and when I start unscrewing the idle adjust screw, once I pass a certain point it goes...
  2. Marine One

    Engine Trouble Knocking at Higher RPMs

    Hello all and great site yall have. Long time lurker, first time poster. I recently bought my first 66/80 cc motorized bike, it came with 1 spare engine and most of the parts for another kit. The bike had a large crack in the frame near the bottom where you pedal but I already had a better bike...

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