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  1. Ski-Doo Snowmobiles
    So my dads 800 etec is acting strange. It is super hard to pull anything below -10c and was not like that a couple years ago. And when you try to start it doesn’t want to run without sitting there nursing the throttle. It goes all the way down to 1050rpm idle then quits. I think it’s missing on...
  2. Ski-Doo Snowmobiles
    Hello I have a 2000 ski do formula deluxe 600 I’m working on an need a new fuel pump. I can’t find fuel pump 403901803. Is there any other fuel pumps that would work as a substitute?
  3. Ski-Doo Snowmobiles
    Sorry for my English. I have change and checked every parts to and in the engine. Here is the part i have changes and checked: Pistons and pistonrings. All gaskets and packboxes (I don’t know if it’s called so in English). All igniton parts Stator, Pick-up/triggercoil, CDI-box, ignition...
  4. New Members Forum
    Hi all, This is a cross-post from over on dootalk. I'm a weekend warrior that enjoys sledding in Wisconsin. I'm working with a buddy to fab replacement parts for our sleds that are unobtanium. We just made an intake plug / boost bottle balancer delete for his 2003 rev 800. I don't have...
  5. Ski-Doo Snowmobiles
    About to take my sled out for the first time this winter (sad). Ran great at end of the year. It has been sitting inside my garage over the summer but I started it and let it run about every other week. Just took it out to load it on the trailer and it’s idling real low and kinda bogging out if...
  6. New Members Forum
    Hi my sled runs and the electrical just doesn’t work and also the reserve button doesn’t work, I was thinking it is the voltage regulator but I can’t seem to locate it. Any feed back will be helpful
  7. General Sled Chat
    Hello, I have a 2008 Ski Doo Summit 800R PTEK. Was riding the other day and the dash kept coming on and off like the sled was restarting but it started running. Eventually I was riding and the sled just shut off completely, gauges are now stuck in a weird position and the sled won’t start. The...
  8. Ski-Doo Snowmobiles
    I recently purchased a 2010 MXZ 800r Ptek. After starting it, it runs great for about 30 seconds to 1 minute. Then once idle for that time, it the cylinder opposite of mag side drops and the sled idles on one cylinder until you throttle it again. Once it drops to one cylinder, the gauge cluster...
  9. General Sled Chat
    Hey guys, I just bought a 2008 ski doo summit. It seems to run quite rough. Sled has a new top end, compression shows around 130 on both cylinders. Seems to run really rough in drive, and then when our in reverse it misfires/backfires. Here’s the video link: any information would be GREATLY...
  10. General Sled Chat
    Does anybody recommend any certain a arms for Polaris sleds or sleds in general between me and my pops we’ve destroyed 3 stock A-arms in 4 weeks and it just feels either poorly made or the rocks are reaching out and grabbing us
  11. Ski-Doo Snowmobiles
    i recently rebuilt my 2012 800 and took it out for the first ride got about 50 miles out and lost a cylinder and immediately smelled fuel and she started smoking like a pig. I pulled the belt shroud off and the injector fuel line bracket was gone the bolt that fastens to the injector must have...
  12. Engine / Drivetrain
    Hello I am new to snowmobile ownership and was hoping someone could possibly point me in the right direction. I recently bought a 95 Ski-doo MX 470. The sled won’t rev over 6k rpms with the track off the ground or under load. Download the service manual and 7200 is top rpm. Tops out about 40 mph...
  13. Ski-Doo Snowmobiles
    Hey guys, first time posting! My 2004 Ski Doo Summit HO has no spark and I am trying to diagnose the issue. I am using my multimeter to test resistance on the stator and I am not sure what readings I need. The plug going to my volt regulator with 3 wires (2 yellow 1 green) reads 1.5 ohms...
  14. Vintage Snowmobiles
    Hi I’m fairly new to this site and I really need help, my 1978 ski doo elan won’t idle and bogs down when the throttle is pushed,I rebuilt the carb with a carb kit and cleaned it as well, the carb is a Tillotson HR. Please help!
  15. General Sled Chat
    Hey guy, I have a 1971 Ski Doo T'NT 399 and am curious about how the fuel lines work with the tilloston carb. There are 2 fuel lines from the tank directly to the carb. One goes into the side and feeds it and the other is on the bottom of the filter. Is this correct? Is there a pulse line? I...
  16. General Sled Chat
    Hey I am new here and couldn't see a vintage sled forum on here so hope this works. I recently got a 71' Ski Doo TNT 399 that was apparently sitting for 3 years but ran before it was parked. I have cleaned the tank, and checked all of the lines, put a bit of oil in each head, replaced the plugs...
  17. Engine / Drivetrain
    Recently I've been having motor issues with one of our sleds and have a friend coming North later this month and need a quick fix. We've reconstructed the engine multiple times and drained the oil without any sign of getting better. It's our only two-person sled and my parents are looking to...
  18. General Sled Chat
    What's up guys? I'm new to the page. I'm looking to add an ice fishing sled to my collection that still has some speed and would make a good backup or loaner sled for buddies to use when we go out on the trails. I'm looking at 2 different sleds and would like your opinions on both. First, there...
  19. Ski-Doo Snowmobiles
    I work for a very small ski hill and am a diesel mechanic by trade, so I'm not great with small engines. I primarily don't operate the sleds, so getting told what happened when things occur is slim at best. This started last week when the sled fouled a set of plugs out on the trail. The...
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