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I was wondering if anyone would have any info for me! I was out for about 3 hours today and on my way home me and a friend lined up our sleds on the 1/8 track for a pass. All went well till on the way back the motor was sounding not quite right, and if it were to idle it would almost stall and it would back fire. I tried changing the plugs and no change (actually wouldn't start). So I was wondering if it would be the power valves cause they haven't been cleaned since I owned the sled or could it be the fuel pump? I was also thinking that it could be a compression problem. If anyone has any thoughts or advice it would be great.

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carb or efi?
did you clean the carbs before riding it this year? compression check?
 
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