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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: 209557" data-attributes="member: 3959"><p>No, not yet.</p><p>I was gonna leave the track early this past Saturday to get to the bike shop before they closed at 1pm, but the kiddo was having too much fun so we stayed until closing time, which was 1pm.</p><p>But now that it runs better, I am gonna keep messing with it and try and get the air screw figured out. It runs like I have never seen it so I am basically back at square one, not only with the way it runs and sounds, but with my learning curve. Also I found that the air screw is missing the washer that sits behind the o-ring, so I am gonna order a new one. Right now it's sitting against the spring.</p><p></p><p>I work tomorrow but have the next 3 weeks off so I plan on taking it out to the desert and doing another plug chop test and see what the results are this week. I am questioning whether I did the previous plug chop tests right and was possibly getting incorrect readings. I'm thinking maybe I didn't have it opened up enough and under enough load for long enough time..</p><p>And I am thinking when I order jets I might end up ordering a bunch, maybe a kit if I can find one for a reasonable price. I think it makes sense for me to have a range of jets above and below what I have now, for future tuning.</p><p></p><p>I am looking forward to getting home tomorrow and bringing her out to the desert to see if the sputtering problem is fixed. My residential streets are not the best place for test drives...</p></blockquote><p></p>
[QUOTE="Trfsrfr, post: 209557, member: 3959"] No, not yet. I was gonna leave the track early this past Saturday to get to the bike shop before they closed at 1pm, but the kiddo was having too much fun so we stayed until closing time, which was 1pm. But now that it runs better, I am gonna keep messing with it and try and get the air screw figured out. It runs like I have never seen it so I am basically back at square one, not only with the way it runs and sounds, but with my learning curve. Also I found that the air screw is missing the washer that sits behind the o-ring, so I am gonna order a new one. Right now it's sitting against the spring. I work tomorrow but have the next 3 weeks off so I plan on taking it out to the desert and doing another plug chop test and see what the results are this week. I am questioning whether I did the previous plug chop tests right and was possibly getting incorrect readings. I'm thinking maybe I didn't have it opened up enough and under enough load for long enough time.. And I am thinking when I order jets I might end up ordering a bunch, maybe a kit if I can find one for a reasonable price. I think it makes sense for me to have a range of jets above and below what I have now, for future tuning. I am looking forward to getting home tomorrow and bringing her out to the desert to see if the sputtering problem is fixed. My residential streets are not the best place for test drives... [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Yamaha
The 1999 YZ250
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