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post #1 of 3 Old 07-25-2007, 10:33 AM Thread Starter
Join Date: Jul 2007
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Angry 2 questions...

#1 since i put 87 octane in my '99 has been running poorly at high speeds since. It did it before but worked its way out. I only run 91 or higher in since. However was dead low on gas in canada and all they had was 87. I spashed a gallon in to get me done the road and filled with 93.....that was over 600 miles ago.
It still runs poorly over 70 mph. it sometimes runs strong then when i open the throttle more it slows. Like there is only 3/4 throttle available even at Wide open. THen when i let off it runs well like its suppose to, then it will slow etc....
I had this problem when i first bought it and did not know that it runs best on high octane......but it fixed it self with a few tanks of the good stuff.
whats going on here????? Its driving me nuts..
#2 Also when the engine is cold and i crack the throttle the clutch slips and the rpms increase. when its warm it does not do this. what needs to be fixed here? new springs, plates both? It looks like one has to remove the entire right side cover to get at the plates etc? True?

I dont think that #2 is related to #1. #1 was a problem 2 years ago and i have not had a problem til i put this 87 octane in....
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post #2 of 3 Old 07-25-2007, 12:36 PM
Join Date: Apr 2007
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I doubt that your one time use of low octane fuel is the cause of your problem. It could be the fuel, just not the octane. You may have gotten a load of water in the mix. This would cause the symptoms you describe.
Try draining the float bowl through the allen headed screw on the bottom of the carb. The fuel will drain through a hose under the bike. Then drain some fuel out of the petcock while it is turned to reserve. Put the drainings in a glass jar and see if water separates out. If it does, that was the problem, and also the cure. You may have to do this a couple times before you get it all. Good Luck!
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post #3 of 3 Old 07-25-2007, 12:44 PM
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Think about the plug too. A cold plug will carbon up at low speeds & town driving. Sometimes it takes a long, high load run to clean it out. You will notice missing under load if this is the case. Or take it out & clean it.
Let us know.
Good luck.

PS: I got nuthin on the clutch thing.

Last edited by josbek; 07-25-2007 at 12:46 PM. Reason: Addition
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