Low end Bogging - Snowmobile Forum: Your #1 Snowmobile Forum

nazzini · 04-15-2008, 10:21 AM

Hello, I have a 99 Summit X 670. Recently when I go from a stop and give it full throttle it boggs and I have to feather the throttle to get going. It goes great after I get it going, no mid or high range problems. I just had the carbs cleaned cause it wouldn't idle. It idle's know, but still have the low end bog problem. I'm thinking they might have done a poor job cleaning them or its something else. Any other thoughts?

Thanks

**RJ Gleason** · 04-15-2008, 01:35 PM

Clean the clutches.

iceman400 · 04-15-2008, 01:39 PM

worn belt maby?

Jorel77 · 04-15-2008, 07:15 PM

Sounds like an acceleration pump problem. Check and see if the carb has one. If it does, that is most likely the problem.

**RJ Gleason** · 04-16-2008, 08:52 AM

Quote:

Originally Posted by Jorel77

Sounds like an acceleration pump problem. Check and see if the carb has one. If it does, that is most likely the problem.

FYI, there is no such thing in these types of carbs.
See the sticky in the tech section under Engine/Drivetrain.

Kellan_723 · 04-16-2008, 04:58 PM

Has it ever ran good before or has it always had this problem and i have a 99 skidoo shop manual so if there is anything you need me to look up for you i would be happy to do so.

nazzini · 04-16-2008, 05:11 PM

It has a new belt. The clutches look clean, but the reason it has a new belt is I disintegrated the last one so maybe the internal component need a cleaning, is this what you were getting at RJ? Could it be a bad crank seal that's causing the bogging? It never had the bogging problem before I blew the belt. Then after I blew the belt I had the idle problem and bogging problem. Idle problems fixed, but not the bogging. Thanks for the offer Kellan, I really appreciate it!

**RJ Gleason** · 04-17-2008, 05:47 AM

It needs an internal cleaning.
Blow it out with an air hose and then flush with brake cleaner and let dry before use.