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Everything Dirt Bike
Make / Model Specific
Yamaha
The 1999 YZ250
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<blockquote data-quote="Mihylo33" data-source="post: 222485" data-attributes="member: 408"><p>Just because it’s black and sooty doesn’t mean it isn’t lean or rich. Oils like Yamalube PJ1 and golden spectro can and will leave a plug looking sooty. Other oils make the plug appear wet and rich. It’s just how it burns. It could be black and sooty from lugging the motor. This happens a lot as well because a good portion of people don’t run the bike in the meat of the power band. </p><p></p><p></p><p></p><p></p><p>I’m not ready yet. It all depends on when Lisa’s boss retires.</p></blockquote><p></p>
[QUOTE="Mihylo33, post: 222485, member: 408"] Just because it’s black and sooty doesn’t mean it isn’t lean or rich. Oils like Yamalube PJ1 and golden spectro can and will leave a plug looking sooty. Other oils make the plug appear wet and rich. It’s just how it burns. It could be black and sooty from lugging the motor. This happens a lot as well because a good portion of people don’t run the bike in the meat of the power band. I’m not ready yet. It all depends on when Lisa’s boss retires. [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Yamaha
The 1999 YZ250
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