engine bogs in powder

[motomike450r]

The last two rides I have been on my mm 700 started bogging down when really tipping it on its sides in deep powder. After cutting out my sway bar and stiffening the front I am happy to report that I can really tip it over now, but WTH with the bogging? When I cleared the snow from the vents it ran fine for a little while. Any suggestions?
Thanks as always, Mike.:d

 

[Tiny pro-x]

Check to make sure your exhaust is sealed up at the joints and seal the outlet threw the belly pan is seal with silicone mine did this once

 

[kyle019]

make sure your exhaust system is sealed, also check your pipe over for cracks. the smallest crack/leak can make it bog. my sled had the smallest crack in the pipe and when you're in deep pow and on the gas it can sputter and bog out at high rpm's.

 

[ferniesnow]

I'm not familiar with the mm series but it sounds like with the powder you are shutting off the air intake. As soon as you clear the vents it runs fine!

SLP vent under the hood in the air box works just great! Another thread on that here that is ongoing. Good luck, fs

 

[kootenaycat]

I'm with the other 2 guys who said exhaust. If your exhaust has a small leak, the powder will restrict the outlet and it will come out the crack which affects the tuning/timing of the exhaust wave in the pipe. That pressure in the pipe is what acts like an exhaust valve in a four stroke, if the timing is off you'll lose all top end. Try riding a 2 stroke with a broken pipe, mine broke on my 800 Summit and I had barely made it back to the truck, wouldn't rev over 6000 rpm

 

[Al "ley Cat"]

The last two rides I have been on my mm 700 started bogging down when really tipping it on its sides in deep powder. After cutting out my sway bar and stiffening the front I am happy to report that I can really tip it over now, but WTH with the bogging? When I cleared the snow from the vents it ran fine for a little while. Any suggestions?
Thanks as always, Mike.:d

Have a 2007 M8 was running fine until 1 hill climb she bogged out on me.Finally found the problem in the gas tank !When it was 1/4 full the bogging would show up, turned out that 1 of the pressure clamps around the rubber hose going from a fuel pick up to the pump was lose .Tightened it up ,she runs sweet now.

 

[motomike450r]

I think I will double check the exhaust, and looking into another opening in the air box. Has anyone used screen material fram a screen door for this?
Also, should I look into adding some to my hood? Any ideas where are the most strategic places to cut? The factory vents are definatley made for trail or at least not 3+ feet of powder, clogged right away. Oh, and pictures work well with me:d:d aint so good wit the words:d

 

[ferniesnow]

I think I will double check the exhaust, and looking into another opening in the air box. Has anyone used screen material fram a screen door for this?
Also, should I look into adding some to my hood? Any ideas where are the most strategic places to cut? The factory vents are definatley made for trail or at least not 3+ feet of powder, clogged right away. Oh, and pictures work well with me:d:d aint so good wit the words:d

Use screen on the outside (pet screen is tougher than window screen and stands up well in the trees).

Under the hood for added air use SLP material as you only want air coming through! You don't want snow, leaves, needles, seeds, belt dust, etc. as that goes directly to the motor.

Here's a picture for ya'

 

[motomike450r]

Did you find a round peice of plastic or metal wrap screen around that and cut a snug sized hole in box and insert?

 

[ferniesnow]

Did you find a round peice of plastic or metal wrap screen around that and cut a snug sized hole in box and insert?

No, that is a 2" SLP vent and it has to be tight so that nothing gets sucked around it or the material doesn't get sucked into the intake. There about $10 bucks at most dealers....

 

[snowseeker]

It could be from your exhaust getting plugged if your leaning it over or the snow plugging exhaust when u let off. I know that a few guys have had this issue when riding in deep powder.

 

[motomike450r]

I also wonder how big of a dent in one of the pipes is a problem? Tripple piped 700. My lefty throttle froze and I didn't know until it was GONE!! luckily the tree magnet was working and used a pine tree to stop it.