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post #1 of (permalink) Old 02-10-2003, 04:39 PM
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I need help

I have a 1980 Ski Doo Blizzard twin MIC carbs 340 7500
My problem is the sled has a good idle low end 0-25 mph is ok but, when you go to full thottle the sled spudders and after about 5 seconds it will take off. If you have a open strech when it takes off it will run about 90mph great!!

Things I have tried
New plugs
the right plug looks good but the left plugs is wet
the carbs are clean
the jet adjust on the right carb is 11/2 turns out
the jet adjust was 2 turns out
I have turned the left carb jet adjust in to about 1/4 turn out and the sled has a little less hesatation but the plug is stll wet both plugs have good spark. I thing that I have noticed is that the left plug when I remove it will release exhust but the right one will not ( this right when I shut it off then remove plugs. Can anyone help Thanks Mark
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post #2 of (permalink) Old 02-10-2003, 10:40 PM
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Re: I need help

It may not be in the engine at all, sounds like it could be in the clutching. Clutching has a bigger effect on the engines performance than people think. They have been known to cause sputters in the mid range. Try looking there for a problem.
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