Question about Kymco 2010 Mongoose 90 R

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I have a Kymco Mongoose 90 that will not idle when the motor is warmed up.

It will idle when the engine is cool, but not when it is warmed up. I have tried the idle screw, and it does not affect the idle up or down. It just dies, but the quad will start back up.

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Steve P

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Does it idle up and down at will,,,, and gets worse when hot? (if yes - the valves are too tight!!) maybe a little hard to start...??

The carb may need a professional cleaning!

Posted on Jul 26, 2014

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