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Ninja 250 sputtering at high speeds?

This is a discussion on Ninja 250 sputtering at high speeds? within the Ninja 250 forums, part of the Kawasaki category; I just bought the ninja 250, 89', it runs great until i level off at 40 to 60 mph. when ...


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Old 12-17-2008   #1
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Default Ninja 250 sputtering at high speeds?

I just bought the ninja 250, 89', it runs great until i level off at 40 to 60 mph. when I level off at these speeds it sputters and is very jerkey. If i accelerate it stops but starts right back up wehn i level off. Ive dumped the tank and refilled but no help.
Jayson D is offline   Reply With Quote
Old 05-26-2009   #2
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You need to pull the petcock from the tank, it may be plugged (mostly). And if there is an inline-fuel filter, check, clean it or replace it. This would be an aftermarket filter not a factory part.If not there may be junk in the jets, so do the Seafoam thing. (a gallon of gas and a can of sea foam. run it for 30 minutes a day for a week, to let it remove all that varnish)Then replace the plugs, which may be another cause of rough running. (check the wires to the plugs, a cable may be irregularly shorting out or too much resistance to the spark.) ------
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