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Everything Dirt Bike
Make / Model Specific
Kawasaki
1999 kx125
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<blockquote data-quote="2strokesteve89" data-source="post: 195406" data-attributes="member: 1670"><p>In this case I would say the plug is an indicator and not the cause, from your description of the plug it is over fueling and if changing the plug makes it run better at 3/4 throttle, it means your motor is probably anywhere from ok to decent and you still need to go thru the carb and adjust the float, and put the main jet at where the chart suggests with your temperature, and elevation. If however the plug doesn't change the way it runs at all, you need to look at the motor and do a compression test.....actually I would do that either way at this point....also if you could post pictures of that spark plug you pulled out that may be helpful to us also.</p></blockquote><p></p>
[QUOTE="2strokesteve89, post: 195406, member: 1670"] In this case I would say the plug is an indicator and not the cause, from your description of the plug it is over fueling and if changing the plug makes it run better at 3/4 throttle, it means your motor is probably anywhere from ok to decent and you still need to go thru the carb and adjust the float, and put the main jet at where the chart suggests with your temperature, and elevation. If however the plug doesn't change the way it runs at all, you need to look at the motor and do a compression test.....actually I would do that either way at this point....also if you could post pictures of that spark plug you pulled out that may be helpful to us also. [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Kawasaki
1999 kx125
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