need help engine backfires

Discussion in '2-Stroke Engines' started by carless, May 18, 2008.

  1. carless

    carless Guest

    anyone know why my engine backfires every other strike, I just installed a new bottom end on my old top end, motor runs but backfires constantly, also bottom end came with needle bearing attached to engine but did not know where part was to go.
     

  2. Assuming this is a Happy Time somehow your timing is off. Shoot. I dunno much more here.
     
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