is it an exciterII? if it is we have the same sled! your timeing could be off...im not to familure with the timeing on sleds....but thats what it sounds like to me.But first try replaceing your spark plugs and if that doesnt work replace your cylanoid and plug wires...if that doesnt work then it could be your timeing....im no expert on these things but thats what i would try.
Your manual should state how many degrees before TDC your igntion should fire and at what RPM. Then you need a timing light. Then follow your specific manufacturer's instructions on how to check the timing.
Yeah, most definetly replace the plugs, thats always the first thing I do when trying to diag running issues. I keep 3 extra sets in my sled for "Just in case" I usually end up handing them out like halloween candy to my buddies.
Snively Trader sounds like you might have water in your gas try puting a little Isopropyl alchol in your tank don't use methyl hydrate it's not good for for aluminium engines.If it seems to clear up somewhat put a little more in and run it for awhile see what happens don't use more then a 3ounce bottle Good luck hope this helps
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