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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Bike runs wide open after closing throttle
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[QUOTE="Detonator, post: 810452, member: 44104"] I'm reviving this post because I'm experiencing the same throttle problem Mark describes. Mark, were you able to resolve the WFO problem by replacing parts, or did you discover water/air leak issues? I had two close calls this weekend, both in strangely similar conditions; after powering up a hill in 3rd/4th gear, I would close the throttle as I crested the top. In both instances, the engine kept revving, and when the rear tire contacted mother earth again, the bike pummeled me to the ground and took off. It seems the impact of looping out would cause whatever was sticking/happening to stop, because the motor would stop revving and quit on its own. I'm now debating whether I was experiencing a momentary surge (air leak?) or a jammed/sticky throttle cable or slide. I do know that I looped out hard during a woods race two weekends ago, and the throttle housing on the bars received the brunt of the force. I've had two buddies take a look, and they both agree that the throttle action is smooth, there's lots of return force on the spring, and there is no hint of binding while playing with the throttle. Visual inspection of the throttle housing revealed nothing unusual, and everything is nice and clean. I hate to be a wuss, but I won't ride again until I solve this problem. If you've never experienced a motor surging unexpectedly, I can promise you it's one of the most humbling 2 seconds in your life. I consider myself blessed to be able to type this message! Please help! [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Bike runs wide open after closing throttle
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