MSR Pilot screw problem
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    Hondaman24
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    MSR Pilot screw problem

    by Hondaman24 » Sun Oct 07, 2007 10:12 am

    Just installed a MSR pilot screw, cleaned the air filter. Now the bike is hard to start. Got it running and warmed up, but no change in idle when adjusting the screw, even all the way closed. What did I screw up? :(
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    crfsonly
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    by crfsonly » Sun Oct 07, 2007 10:16 am

    if the fuel screw doesn't have any affect on the idle then you likey need to change your pilot jet by going larger.

    ken
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    Hondaman24
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    by Hondaman24 » Sun Oct 07, 2007 10:20 am

    Even if it was running rich before I changed the pilot screw. Seems backwards for some reason.
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    crfsonly
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    by crfsonly » Sun Oct 07, 2007 10:26 am

    that i didn't know...i shouldn't have assumed it was a lean condition you were chasing...that's typical for most. either is true, lean or rich, if the fuel screw has no affect then it is typically the result of having a pilot jet that is either too large (rich) or too small (lean).

    ken
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    JAWS
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    by JAWS » Sun Oct 07, 2007 10:29 am

    Alxo insure that you have the washer, o-ring and spring installed properly on the fuel screw.
    Joe
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    '05 CRF450X,McClain suspension, Cycra Probends, Pastrana FMX Pro Tapers,BRP Sub mount & Scotts stabilizer.See carb sticky for more
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    Hondaman24
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    by Hondaman24 » Sun Oct 07, 2007 10:49 am

    I am worried about the little O ring. I was never able to get it out. Could it be crossways in there? Or missing. Guess I will have to pull the carb off the bike to see :roll:
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    crfsonly
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    by crfsonly » Sun Oct 07, 2007 10:54 am

    yes to all. you should make sure there is the washer, o-ring, and spring. all three are absolutely necessary for it to function properly. if the o-ring was missing it likely would be leaking fuel. however, it could be sideways which might limit it from being fully seated.

    ken
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    JAWS
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    by JAWS » Sun Oct 07, 2007 10:55 am

    Not very likely cossways, but ti could have fallen out unnoticed. That happens all the time. Check it out.
    Joe
    Image
    '05 CRF450X,McClain suspension, Cycra Probends, Pastrana FMX Pro Tapers,BRP Sub mount & Scotts stabilizer.See carb sticky for more

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