08 yz 450 just stops running

5 replies to this topic
  • Jonathan Mehal

Posted June 20, 2011 - 06:33 PM


hI IM NEW TO THE BOARD. I have an 08 yz 450. and it will run fine then just dies. it will not start back up but if you let it sit for a while example 1 hour or so. it will start right back up and run fine for a while then it does it again. its got fuel and spark any suggestions

  • yz450fcranker

Posted June 20, 2011 - 06:58 PM


keep it running faster maybe its too hot

  • todds924

Posted June 20, 2011 - 07:07 PM



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  • i_wheelie_longer

Posted June 21, 2011 - 12:52 PM


Check your valve clearances.

  • primerib108

Posted June 21, 2011 - 12:54 PM


Vapor lock?

  • grayracer513

Posted June 21, 2011 - 12:59 PM




Check it for spark right after it dies. Bet there isn't any.

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