Crf 250x wont start
  • Warrencl224
    Posts: 6
    Joined: Fri Jun 22, 2018 8:12 am

    Crf 250x wont start

    by Warrencl224 » Mon Aug 20, 2018 11:40 am

    Hi guys. I ride a 2009 crf250x. Well, had it 3 months and have ridden it once. Been a nightmare of a bike. Motor had a rattle in the low rpm. Replaced timing chain. Bike ran for 30 seconds and cut out. Thats it. Will not start. I noticed 1 inlet valve was tight . could not put a smaller shim. So decided to rebuild the motor. Kibble white valves, guides, springs, the whole lot. Did piston and rings too. Barrel was still good. Nothing broke to actually cause any damage. New spark plug. Fresh fuel. Carb has been cleaned and serviced. 45 pilot, 160 main jet. Any ideas?
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    JimDirt
    Posts: 4406
    Joined: Sat Nov 25, 2006 6:31 pm

    Re: Crf 250x wont start

    by JimDirt » Mon Aug 20, 2018 3:38 pm

    You need to test the Stator and make sure everything is working with it , usually when the Stators go , they give dying issues like that then quit altogether ... Do you have a Service or Owners Manual for the specs ??
    2020 CRF450R
    2006 CRF450X
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    Weiser , Idaho
  • Warrencl224
    Posts: 6
    Joined: Fri Jun 22, 2018 8:12 am

    Re: Crf 250x wont start

    by Warrencl224 » Mon Aug 20, 2018 9:36 pm

    Thanks for the reply. I have not tested the stator coil at all. Will test that. I do have the workshop manual at home so will go through it and check. I did notice though my sparkplug is very dry. Convinced its not getting fuel. Seems to me my valves are passing. Perhaps thats why its not getting fuel.
  • Aussiecrf230
    Posts: 1964
    Joined: Fri Jan 06, 2006 11:11 pm

    Re: Crf 250x wont start

    by Aussiecrf230 » Mon Aug 20, 2018 9:50 pm

    Dump a spoonful of fuel down the plug hole and see if it wants to start. If it does go back and check the carby is getting fuel and letting it through. Your valves will only be a starting problem if not opening or not sealing when closed.
    Assume your valve clearances are correct and valve timing spot on.
    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

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