my moped is hissing

chris /
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i dont know what is wrong with my moped, it is an adly thunder bike TB-50 and when i rev it up on the stand it tops out at around 4000RPM and begins hissing and the tach goes up and down. it will not get enough power to run on the ground. when it hisses it blows a crap load of black stuff out the muffler. i would greatly appreciate some help on this.

_Chris

This single post is part of a larger thread. Start from the top or view this post in context.
Subject Written By Posted
  my moped is hissingTopic by: chris chris 06/02/06 04:52AM
  my moped is hissingRe: chris chris 06/02/06 04:54AM
  Re: my moped is hissingRe: joew joew 06/02/06 10:16AM

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