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Everything Dirt Bike
Make / Model Specific
Yamaha
Yet Another Jetting Question
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<blockquote data-quote="SRAD97750" data-source="post: 211542" data-attributes="member: 425"><p>It is rich. I think float setting has most to do with the general black soot on the plug.</p><p>Hanging idle can be an indication of an idle lean condition, which is typically caused by an air leak at the carb boot/intake or an improperly adjusted idle mixture screw. Set idle and mixture while the engine is HOT.</p><p>Looks like you are on the right track. I would try again with the float set correctly. No reason to change brass unless it won't run at a particular throttle setting.</p><p></p><p>Slow drip from the weephole under the impeller housing is a sign of a bad water seal. But it is typically constant once it goes.</p><p>-BIG DAN<img src="https://www.dirtbikeaddicts.com/static/images/smilies/thumb.gif" class="smilie" loading="lazy" alt=":thumb:" title="Thumb :thumb:" data-shortname=":thumb:" /></p></blockquote><p></p>
[QUOTE="SRAD97750, post: 211542, member: 425"] It is rich. I think float setting has most to do with the general black soot on the plug. Hanging idle can be an indication of an idle lean condition, which is typically caused by an air leak at the carb boot/intake or an improperly adjusted idle mixture screw. Set idle and mixture while the engine is HOT. Looks like you are on the right track. I would try again with the float set correctly. No reason to change brass unless it won't run at a particular throttle setting. Slow drip from the weephole under the impeller housing is a sign of a bad water seal. But it is typically constant once it goes. -BIG DAN:thumb: [/QUOTE]
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Everything Dirt Bike
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Yamaha
Yet Another Jetting Question
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