Summit bogging and low idle

Hi i have a 98 ski doo summit which always runs good but recently we ve had so pretty deep powder and i seems really boggy and seems like its running on one cylinder and later i stop its idleing at the 0 mark on the rmp guage and i rev it up let it sit and idle and it starts to climb and later finnally gets back up to the normal iddle mark and it runs fine but it does this each day i ride for the last cuple days and it seems to bog down alot and seems like it had no power in the snow and has farely new plugs this year so i dont know what the problem would be??? and after i turn it off and back on it runs fine again until a while later seems to bog again so i dont no whats goin on??
Feedback would be aprieciated!
Thanks!!

Sickbuild said:

" after i turn it off and back on it runs fine again until a while later seems to bog again"

Don't know if its the case? but it sounds alot like what my sled was doing till I gutted the HAC, then rejetted it all. check all lines

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No I doubt it's the case cuz it was juSt checked over cuz of a new track and it was looked over so I'm guessing I have either water in my tank bad blog wires or need a carb clean? And ideas?

Ya it does have the hac but my compression is good so i think it may be plug wires or caps?