bike shooting flames and wont start
  • famouszgr
    Posts:4
    Joined:Tue Jul 02, 2013 1:38 pm
    bike shooting flames and wont start

    by famouszgr » Thu Jan 23, 2014 7:56 pm

    hello!

    we have an 06 crf450r and the bike wont start. The valves were recently adjusted, the carb was recently cleaned and rejetted, a new spark plug, good fuel, etc. the bike will backfire and shoot flames right out the back and will sometimes start if its pull started. the bike is getting fuel and spark but will not start at all. someone said it might be the stator but if its getting a spark then shouldn't it be fine? im no expert and need help trying to figure it out.
  • User avatar
    JimDirt
    Posts:4406
    Joined:Sat Nov 25, 2006 6:31 pm

    by JimDirt » Thu Jan 23, 2014 10:03 pm

    It still sounds like a lean condition , double check

    Valves to positively eliminate them

    Pilot Jet , if it was cleaned and not replaced

    Hot Start , make sure its not stuck

    Exhaust Leak at header to head connection or muffler connection

    Float Level , tilt the bike about 20-30 degrees (about like this \), it should spill fuel out the overflow

    Kill Switch , test by unplugging and trying to start

    If all clear inspection , then go to Stator/Ignition electrical, the stator or CDI can break down under load , as can the Spark Plug Boot or coil

    Hopefully you have a Honda Service Manual so you can have the proper specs for everything , especially for any electrical testing it is mandatory
    2020 CRF450R
    2006 CRF450X
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    Weiser , Idaho
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    crfsonly
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    by crfsonly » Fri Jan 24, 2014 6:52 am

    also make absolutely sure your timing is correct.
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  • famouszgr
    Posts:4
    Joined:Tue Jul 02, 2013 1:38 pm

    by famouszgr » Wed Jan 29, 2014 7:01 pm

    going to go through that and make sure everything is fine. thanks!
  • mrfreakinjt
    Posts:9
    Joined:Sun Mar 09, 2014 3:15 pm

    by mrfreakinjt » Sun Mar 09, 2014 3:25 pm

    Seconded on the timing.

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