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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: 813451, member: 44104"] I appreciate all your responses, and I hope we're creating a good resource for anyone who encounters the same. The only other thing I haven't mentioned is that there was a good bit of crud around the spark plug area, indicating that it wasn't sealing properly (air leak?). I cleaned everything up and put a new plug in ( the old one looked great, and my jetting is fine). I also removed the exhaust pipe and silencer and removed as much garbage as I could. I repacked the silencer and siliconed the joints. New exhaust gaskets and springs. Then I took the subframe off and took a degreaser to the airbox and boot. I did discover a pocket of sludge in the boot area, more than likely the waterproof grease from the air filter. I am ashamed! Anyway, I just went top to bottom cleaning everything and replacing all necessaries. Drained the gas tank and swished some fresh fuel around, drained it, too, but there were no visible deposits in the fuel. My first ride was about 4 hours long, and I experienced nothing unusual (except the bike was a lot quieter after the repacking and fresh plug!) I will keep you posted if the problem reappears. Q: the carb slide wasn't "pristine," in the sense that there was some light scuffing on the contact points. One side of the slide was like new, the other had the light marks. The carb barrel was perfect, though. I had a local mechanic look at the slide and he felt it for burrs or irregularities, then told me it was just fine. His feeling was that I was getting a surge due to crud blocking one of the jets temporarily. Should I be concerned about the slide condition? It was as smooth as butter when I tested it during reassembly. [/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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