Quote:
Originally Posted by Maielstrom
Hey everyone,
I noticed in the past 2 months (approximate), that my Ninja will idle correctly at start up, but after riding around and coming to a stop (stoplight or done riding), the idle RPM will be a good amount higher. The starting RPM is around 1300 as per the manual, and it is averaging around 2000 at stop lights, but fluctuates up to a peak of 2500. Does anyone happen to have any idea what I could look into about this or why this is happening?
Thanks!
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As noted, the full-hot idle speed should be 1300. The cold speed is determined by the amount of choke.
After riding for 30 minutes or so, set the idle to 1300.
Before doing that, you could try turning the throttle backward firmly to see if it will drop the RPMs, which would tell you something is hanging-up and not allowing the butterflies to close properly.
A couple other things that could effect idle speed is idle mixture and carb sync. A vacuum leak will also cause the RPMs to rise and "hang" when you close the throttle.
I wouldn't let it idle for 10 minutes to warm up. 3 or 4 minutes is enough to start riding if you set the RPMs around 2000 and back the choke off as soon as possible. It will warm-up a lot faster when riding normally than it will idling.