Maintenance & Technical > KX250 / KX125

extremely high rev sometimes???

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Nairns_Two_50K:
Thanks for the input. That does make sense.

Openclass:
Question: Will this jetting problem also lead to drolling or that black unburnt gas being spit out the rear of the exhaust?

I race and ride mostly Harescrambles. It was just my thinking that this was from not being able to rev (clean it out) most of the time.

don46:

--- Quote from: Openclass on April 12, 2011, 02:25:07 PM ---Question: Will this jetting problem also lead to drolling or that black unburnt gas being spit out the rear of the exhaust?

I race and ride mostly Harescrambles. It was just my thinking that this was from not being able to rev (clean it out) most of the time.

--- End quote ---

This is a difficult question to answer, obviously a well jetted engine should minimize the drool. the type of oil you burn has an impact as well. i would say that a quality synthetic gives you the best opportunity rid your self of drool. When we raced indoors we ran a synthetic oil that was smokeless made by redline, (these guys make great stuff, if your serious abour racing try the gear saver, the yellow not the blue, great stuff). My son rides our 250 2t and it never drools, my wife can get on it and make it slobber like a saint bernard, so even jetting isn't the whole answer.

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