07 yz 450 compresion

4 replies to this topic
  • snoplw

Posted June 21, 2007 - 04:47 PM


I have a 07 450 went to start feels like auto decomp. stuck on no pressure. cranks over by hand. removed valve cover all seems to be ok. Stuck ring,valve,??? please any info would be great.:thumbsup:

  • CaptainKnobby

Posted June 21, 2007 - 06:00 PM


How many hours do you have on the bike?

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  • kyle450rider

Posted June 22, 2007 - 01:12 AM


did you check your valve clearance?My experience when the get tight if feels like you lose compression.

  • skidooboy

Posted June 27, 2007 - 03:15 PM


any update onthe low compression? ski

  • CaptainKnobby

Posted June 27, 2007 - 07:11 PM


If you have alot of hors on it you may want to rebuild the topend and freshen it up.

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