2006 YZ450f backfires then dies.

3 replies to this topic
  • mgfmotox

Posted December 30, 2007 - 04:32 PM


A few weeks ago i went through some deep water with my friend. I thought that it was backfiring because i got something wet, so i let it dry out for a week and it was still backfiring and then it would bog out and die then it would be a pain to try to get started again. We got a new FMF Q2 pipe on there and rejeted it and it still did the same thing. If anyone knows whats wrong with it let me know.

  • 642MX

Posted January 01, 2008 - 08:09 AM


Sounds like it may have water in the fuel. Try draining the tank & carb.

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  • hillclimbguy

Posted January 01, 2008 - 08:32 PM


Check the spark plug wire and the plug it self. May have water in the cap. This has happened to me before.

  • mgfmotox

Posted January 07, 2008 - 06:30 PM


When i took it in to another shop the found that the fuel line was kinked around the carb. We untangled it and it ran great. But thanks for the responses.

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