running rough

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  #1  
Old 11-24-08, 01:47 PM
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running rough

My 85 yamaha srv runs rough. It blows alot of smoke, and does not have good power until it reaches about 3000 rpms. then it runs good up to 5000 rpms. When I shut it off it stays running for a few seconds. looking for help to figure this thing out. thanks
 
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  #2  
Old 11-28-08, 11:29 PM
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What color smoke? Is it white or black?
 
  #3  
Old 12-23-08, 06:48 AM
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It blows white smoke. But I think the problem may be low end power. The sled runs great at top end, but when i slow down it wants to bog down and shut off. i have to feather the throttle to keep it going. I also noticed when I first start it, it spits gas out of the muffler until it gets going. the plug on the right cylinder is also clean like its not burning. any more suggestions? thanks
 
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