1999 Summit X 670 coughing

[Snow Guy]

Hi I have 99 Summit X 670 that's been coughing. When I'm riding on hard packed and crack it takes off just like it should, but when I'm in powder, climbing a hill, or go to cat walk over a drift it coughs and starts bogging, an time there a big load on it will start coughing. I have cleaned the carbs and changed the spark plugs and it still does it
Does any one have any ideas of what could be causing the coughing?

Thanks

 

[BeachSled]

I would take apart your clutches and replace all the internals. When is the last time they were fully serviced ?

 

[Snow Guy]

Don't know when the clutches where last serviced, just bought the sled this season. What would taking apart the clutches and replacing the internals do?

 

[Snow Guy]

Found out the problem had a huge hole in the pipe. Took it to a welder and got it fixed, pulls harder than ever now.


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[slededjr]

It probably pulls better now then it did I bet