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My yamaha cygnus x 125 (2004) scooter back fires

When I first start my yamaha cygnus x 125 (2004), it backfires and got to keep revs on at a stop or stall. It is fine after a mile or so. Whats going on please?

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The motor might have jumped timing or bad spark plug or both mabe even the float is jammed

Posted on Mar 30, 2014

  • kevin bleasdale Mar 30, 2014

    thank you, it was the spark plug. I have now changed it and no more problem. Thank you.

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Hi there,
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Posted on Jan 02, 2017

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