Question about 2003 Honda XR 125 L

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Rapid popping/crackling noise in xr80

Just bought '03 honda xr80. Started making popping/crackling noise when kids are riding. Appears to be coming from exhaust. Mainly hear when bike is being ridden, not so much in neutral. Runs good, but still concerned bout cause of noise.

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A four stroke will pop and backfire under decelleration when it is lean, or not enough fuel. (Jetting too small in the carburator) But, look at the spark plug for color, white is too lean, black is too rich, and chocolate is just right. Make sure the air filter is good and clean. And lastly... have the valves been adjusted?

Posted on Jul 31, 2009

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Posted on Jan 02, 2017

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