08 not idling

1 reply to this topic
  • r_daddy3

Posted January 31, 2008 - 06:13 AM


I recently bought an 08 yz450f and it doesnt want to idle at all. Does anyone else have this problem???

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  • grayracer513

Posted January 31, 2008 - 07:02 AM


If you can hold the engine running at a low speed by using the throttle, try just raising the idle speed (large screw facing out to the side at the left front corner of the float bowl).

If you have an idle quality problem (engine runs poorly at low speed), check to be sure that the pilot screw hasn't fallen out, and try adjusting it per the manual. If that's not it, check for air leaks, for the hot start not closing (cable play), and try draining, refilling, and re-draining the float bowl. If none of that works, the carb may have something stuck in it.

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