'06 M7 Deep Powder Running Issues

[307in406]

I ride an '06 carberated M7. When going through deep powder my sled starts acting funny and starts cutting out. When I give it more throttle it doesn't increase in RPM's or speed obviously. It doesn't decrease it just won't increase, like its hitting a wall. If I stop and sit for a couple of minutes or if I feather it, maxing the throttle out, across a meadow it seems to "break" free and run like it should. If I unload off the trailer and ride the trail to where I need to go it hauls and everything is fine, its just when i start going through the powder. I have looked at the boot between the carbs and air box and everything looks tight and good, so I don't think that its sucking snow in anywhere. I do usually mix sea-foam in with my fuel to prevent freezing up. It is running rich also, running down the trail, through the powder, and just sitting there idling it runs rich. I have taken it to a mechanic with the same sled I have and he is running the same jets as well as the same needle and seat positions.

Has anyone ever encountered this problem or have any ideas?

 

[jtblaster]

On my bfs xp 800 it came stock with a caberator heater so when the sled is cold or gets iced up you just have to turn on the heater to thaw it out.

Maybe you are having some kind of problem with your carb freezing or iceing up since it only happens when you are playing in powder.

I dont know much about cats but maybe you need some kinda mesh vent covers like what the skidoos have, if you dont already have them, to keep all the snow out of there

 

[skidoo_only]

I had power problems with my Everest when in super deep powder. If I boon dock too much to the left or have the hood under the snow of long periods of time. The fine mesh that keep snow out actually was getting choked out. I cut a hole in the back of the air box and covered it with the mesh and now I don't have that problem any more. I my case I wasn't getting enough air flow because the snow was blocking it.

 

[duffman]

There is a little vent hose that comes out of the ecm. It tends to get plugged under deep snow conditions. It does not take much to plug it up. I think people were re-routing the hose under the engine to keep it warm and ice-free, but I am not sure. Many people have had problems with it over the years, do a thread search in the arctic-cat section and you can probably find some more info.