rm 250 idle problem
  • ErikB15216
    Posts: 4
    That's strange.. I'll have to think on it some more.

    I want to say things like 'check the pilot circuit' and 'double check the float height'... But I'm not convinced either is the problem...
  • ErikB15216
    Posts: 4
    i have a 98 rm 250 starts up great runs great just idles super high ive cleaned the carb new air filter etc. the idle screw doesnt have an effect wether its screwed all the way in or all the way out any suggestions on what might be causing this very high idle?

    thanx
  • yo_marcyo_marc
    Posts: 603
    My first thought is that it could be the throttle cable adjustment...

    With the motor off, if you open the throttle and let it snap shut, do you hear the slide 'clack' shut in the carburetor? You should..

    If it's not that.. Does that bike have an adjustable choke knob? One that 'clicks' as you turn it? That may be turned too far out, if you do have one..
  • ErikB15216
    Posts: 4
    you can hear it clack so its not that and my choke is an up and down slide choke
  • pdk_6589pdk_6589
    Posts: 585
    If everything is okay in the carb, I can think of just one thing that can cause a high idle. Crank seal on the flywheel side could be worn out letting extra air through. I have seen this on a few bikes. Just a guess though. It could still be something in the carb though.
    1999 RM250 (SOLD)
    2009 KTM 300XC-W
    2005 Kawasaki Z1000
  • eatrockseatrocks
    Posts: 48
    pull the stator cover off and check for water i have a 96 rm250, had the same idle problem and there was a cup of water inside the stator, dried it out and now g2g.
    ___________
    If you ain't desert, you ain't s#!%
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