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07 crf150r
  • mcole024
    Posts:1
    Joined:Tue Nov 23, 2021 11:24 pm
    07 crf150r

    by mcole024 » Sun Sep 03, 2023 4:17 pm

    Fresh rebuild . Took it to race and it backfired then quit running. Compression low but turns over . Any ideas?
  • Aussiecrf230
    Posts:1964
    Joined:Fri Jan 06, 2006 11:11 pm

    Re: 07 crf150r

    by Aussiecrf230 » Sun Sep 17, 2023 2:22 am

    When you say fresh rebuild is that just piston and rings? Or a new crank and or head rebuild?

    Did you install a fresh spark plug? Is inside the carb clean?
    Ray
    Australia

    CRF230F 2004
    C30F Power Up needle
    Mains 132
    Idle 45
    2 turns out
    Baffle out, Screens In

    It starts,it runs,it gets to where all CRFs can get to without the valve or valve plate dramas
  • RaggedMountainMan
    Posts:2
    Joined:Sun Aug 20, 2023 3:28 pm

    Re: 07 crf150r

    by RaggedMountainMan » Sun Sep 17, 2023 8:28 am

    Sounds like you need to look at the cam timing, just thinking.
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