poping on decel

4 replies to this topic
  • Stumpf246

Posted November 12, 2009 - 07:56 PM


I got a 08 yz450f with a fmf pipe and rebuilt motor. when i totaly let off the throttle it pops nonstop on decel. could this be a jettin issue or exaust issue i dont know any help appreciated

  • grayracer513

Posted November 12, 2009 - 08:05 PM




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  • Lor

Posted November 13, 2009 - 07:01 AM


Lean jetting or air leak in exhaust?

  • dbyamaha

Posted January 26, 2010 - 04:22 PM


i have a stock 08 yz450f and i ride about 340 ft above sea level and it still pops on decel. is this normal??

  • grayracer513

Posted January 26, 2010 - 04:28 PM


Read the links in the second post.

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