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  1. REV-XP/XS Chassis: Renegades/Freeride/Backcountry
    Hi folks: This started today. My son's 2011 800 ETEC (Renegade Backcountry X) with 5000 km bogs going through 7100 RPM and drops to 5000 RPM. When you lay off the throttle and reapply it the same thing happens. Will not go above 7100 RPM. Not sure if this would affect anything, but we recently...
  2. MXZ / Legend / Summit / Grand Touring / Formula
    My Skidoo 2000 Formula 500 LC is bogging both under load and while up on blocks with no load. Symptoms: Under load riding it bogs at speed and over 4000rpm Under NO LOAD on blocks with track spinning freely it can and will bog at low rpm and then rev up Facts: It had some old gas in it...
  3. MXZ / Legend / Summit / Grand Touring / Formula
    Have been fighting with a very serious mid to high RPM bogging issue on my 98 Summit 670X. After concluding it wasn't fuel system, carbs, spark, compression, air leak, clutches etc., I finally took the air box off, and it ran perfect. The difference is drastic, easily double the power and...
  4. MXZ / Legend / Summit / Grand Touring / Formula
    I have a 1998 formula z 670 that has been giving me troubles lately. it was running great for about 2 weeks, then one day right after I hit 120k on the lake the engine became really loud and sluggish. It does have a can on it. when it started becoming louder and sluggish it sounded so bad that...
  5. REV Chassis - Performance and Trail Models
    Hi,I have an 04 rev 800 ho. Last Saturday I took it out for around a 30 km ride. It ran perfect all day. After that i rode over to my friends house and shut it off. It sat for probably an hour. When i was ready to leave, i started it up and it ran fine for about a minute then it suddenly had no...
  6. MXZ / Legend / Summit / Grand Touring / Formula
    I am new to dootalk. Irecently got a 1999 mxz 500 from a buddy of mine. The sled starts on the first pull every time but will not exceed 3500 rpm. When I take the airbox off I can get it to go over 4000 rpm and go about 10 mph but its struggling with a bog still. With the airbox off or on...
  7. MXZ / Legend / Summit / Grand Touring / Formula
    Hello to all, new to the Doo forum. Haven't owned a snowmobile for about 10 years, but with the snow we are getting this winter, I couldn't resist, and bought a 98 Summit 670X with the DPM removed. Has lots of power when you first take off, then bogs down after a while. Seems to be worse in...
  8. REV Chassis - Performance and Trail Models
    I have a 2008 with 4,000 miles on it. Was running great and all of a sudden it bogs real bad right off idle. So bad that the engine will stall if I dont back off. It is unusable. I checked compression, plugs, vacuum lines etc. If I put the choke on half way it will go somewhat. any ideas? thanks,
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