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Everything Dirt Bike
Make / Model Specific
Yamaha
The 1999 YZ250
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<blockquote data-quote="Trfsrfr" data-source="post: 211349" data-attributes="member: 3959"><p>After how long of dealing with this issue, and after 5 hours riding today, and after putting in new larger jets last night, and after seeing the CR80's plug look just as sooty and hearing it sputter as well, and after going smaller on the YZ's MJ and having it get to the acceptable mocha brown color it was 2-3 weeks ago and it running better then, I think I have to go back to that.</p><p>I think I was making progress then.</p><p>So I think I'm going to put in the 165 MJ and one size smaller PJ on the YZ, and try the 117 MJ on the CR80 and run them.</p><p>I never really paid attention to the altitude on my GPS before, but my riding area is apparently at least 400 feet higher and above than what I originally thought it was. </p><p>And yes, it's winter-time here now, and very dry as normal.</p><p>Maybe tomorrow I'll swap those jets out.</p></blockquote><p></p>
[QUOTE="Trfsrfr, post: 211349, member: 3959"] After how long of dealing with this issue, and after 5 hours riding today, and after putting in new larger jets last night, and after seeing the CR80's plug look just as sooty and hearing it sputter as well, and after going smaller on the YZ's MJ and having it get to the acceptable mocha brown color it was 2-3 weeks ago and it running better then, I think I have to go back to that. I think I was making progress then. So I think I'm going to put in the 165 MJ and one size smaller PJ on the YZ, and try the 117 MJ on the CR80 and run them. I never really paid attention to the altitude on my GPS before, but my riding area is apparently at least 400 feet higher and above than what I originally thought it was. And yes, it's winter-time here now, and very dry as normal. Maybe tomorrow I'll swap those jets out. [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Yamaha
The 1999 YZ250
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