Mortagleus
New member
Had sled running for about 40 min in an hours time. Started good. Warmed up for about 10 min, Went and filled up gas. Drove to a buddies about 15 min shut it down. Then started idled for a bit then we headed out about 15 min later at about 70km/hr lost power but still running pulled over and shut it down. Tried to pull over but had seized clutch side cylinder. Sounds like somethings grabbing when trying to turn primary by hand. Spark plug was grey, other 2 were perfect brown. Top of cylinder throught the plug hole looks smooth flat grey didnt see any pitting Was should i look at as a cause, compression was about 120 across the board all 3 before.
could be 1 or more of the following, dirty carb in that cylinder(obstruction), leaking crank seal allowing air in the cylinder, leaking/cracked carb boot on that cylinder. You will need to take it apart and see what it looks like, gotta do some exploratory surgery!
Mortagleus
New member
Will check all above. For the crank seal how do you check that wih motor not running