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Everything Dirt Bike
Make / Model Specific
Yamaha
1988 yz250 build
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<blockquote data-quote="SRAD97750" data-source="post: 197537" data-attributes="member: 425"><p>Do post a video. I can identify lean rev vs throttle rev.</p><p>What you're looking for won't be obvious. It only takes a couple mm of throttle opening to make an unloaded 2T scream.</p><p>Maybe the throttle cable is a bit tight, or slightly mis-routed? When the bars turn, the cables can get caught on different things and pull the throttle slightly.</p><p>Even at the carb where the cable enters the cap. The sleeve can get dislodged one pull, and reset itself the next. Giving you inconsistencies. Make sure the sleeve isn't getting hung up.</p><p>I've had this problem many times before. My 89 has a nut/block for the number plate that catches sometimes. My solution is to secure the cable sleeve to the bike so it can't be pulled. -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: 197537, member: 425"] Do post a video. I can identify lean rev vs throttle rev. What you're looking for won't be obvious. It only takes a couple mm of throttle opening to make an unloaded 2T scream. Maybe the throttle cable is a bit tight, or slightly mis-routed? When the bars turn, the cables can get caught on different things and pull the throttle slightly. Even at the carb where the cable enters the cap. The sleeve can get dislodged one pull, and reset itself the next. Giving you inconsistencies. Make sure the sleeve isn't getting hung up. I've had this problem many times before. My 89 has a nut/block for the number plate that catches sometimes. My solution is to secure the cable sleeve to the bike so it can't be pulled. -BIG DAN:thumb: [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Yamaha
1988 yz250 build
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