Mountain cat bogging.

[funtimes]

Hey everyone, Looking for some help. I have a 600 mountain cat '03. The sled runns fine untill you hit 7000 rpm. Then it feels like someone grabs the back of the sled... It just dies and boggs, engine still runs just has no power or pick up. If you have the throttle past 1/2 it does the same thing at that rpm. range. It will only run good up to that rpm. I had it at the dealer and they told me it runs fine and cannot find anything wrong with it.. Does anyone have any ideas ? I had it at the dealer before for the same issue, and they adjusted the APV valves and checked the servos, and they said everything was good.. Any ideas would be appreciated, Thanx.

[reaper020]

could be the stator I would do an ohm check on it.

[funtimes]

I will check that. I also thought it may be clutching. The sled does not engage untill 4200. Buddy of mine has the same sled his starts at 32-3400. This just sucks the deaker had it for 4 weeks , said everything was good, took it out last weekend to the lake to test it out, and it had the same problem it did when I dropped it off. It will sure make the last trip this weekend not fun at all.... I mayhave to cancel, the sled runs like junk..

[OLIVE DRAB DEAN]

Carb or efi?

[funtimes]

It is a EFI.

[mxz sledhead]

It's almost sounds like reed problem the fuel is not atomizing Iam not sure if efi have reeds or not just a thought

[Junior Highmark]

Rev's all the way

[joshua335]

Originally Posted by Juniorhighmark

Rev's all the way

revs? got pistons and rings?

[OLIVE DRAB DEAN]

Try pulling your fuel pump and clean the foot valves, it's not that big of a job. They can get gummed up and stick the foot valve. I got a 03 800 efi and that smarten'd it up.

[OLIVE DRAB DEAN]

Trouble shoot the easy stuff first before you go to the extreme. Works for me. Good luck.

[snotterite]

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[M7ZR6]

Try pulling your power valves out and cleaning them. Sounds like they are not opening all of the way. If they haven't been cleaned before chances are that they will be pretty gummed up. Your dealer should have done that when the checked your servo motor for proper operation but I bet they didn't. May not be the problem but is the easiest and cheapest thing to try first.