2012 ninja 250 revving really high when cold. - Kawasaki Ninja 250R Forum
 
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post #1 of 6 (permalink) Old 11-14-2013, 01:45 PM Thread Starter
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2012 ninja 250 revving really high when cold.

Hi guys

I have a 2012 ninja 250 which I have owned for nearly a year and I have clocked up 6500 miles I have a Beowulf slip on exhaust.

In the last couple of weeks it has been revving really high when cold! It ticks over fine then all of a sudden it flies up to about 6000 revs and sits ther for a couple of minutes then it dies down again. But I set off on my ride to work and it revs high again! It's that bad I let the throttle off and the bike keeps moving for about 30 yards then slows down again also when it is warm it ticks over at about 3000 rpm. Sorry for going on but I just wandered if any body could help. Ps I don't want to take it back to the dealership as they are a rip off! Many thanks Ross


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post #2 of 6 (permalink) Old 11-14-2013, 02:09 PM
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You need to adjust the idle mixture. This is not the same as the idle speed adjuster.



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post #3 of 6 (permalink) Old 11-17-2013, 12:56 PM
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Mine is doing the same thing. Only to 3k though. Got to love a carburator with a change in weather temperature.

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post #4 of 6 (permalink) Old 11-26-2013, 05:07 AM Thread Starter
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True what do you reckon we can do as iv changed the idle speed and it only revs up to 4 some times 5 now??? many thanks Ross

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post #5 of 6 (permalink) Old 11-26-2013, 05:10 AM Thread Starter
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Just realised that I haven't changed the mixture just changed the speed... How do I change the idle mixture?

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post #6 of 6 (permalink) Old 11-27-2013, 12:15 PM
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After reading this again, try a carb cleaning first.

I'm not sure how to adjust the idle mixture on the 08-12 250's, so let me do some research first. I only know how to do them on the 88-07 model.



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