ok so i was ridding to my friends and i decided to speed up..around 80 i was going and all of a sudden my 02 summit 700 shut down and i couldent pull it over....so i messed with the clutch and turned it a few times and went to statrt it up and it started and ran just fine for a couple miles. then the same happend again so i missed with the clutch again and it when i started it this time it ran off only one cylinder so i though well maybe it was just a fauled plug! so i rode it to my friends put new plugs in and still only one cylinder..couple days later i went back did a compression cheak on the cylinders and the left clutch side one had 100 comp and the other had 0....so this i brough it to a friend and he looked it over and said there was no hole in the cylinder and that it had a broker crank...but its hard to belive he even looked at it because i could obviously see no sighn of takeing any head bolts off or anything when i looked at the sled when i got it back! so i left my sled at another friends house for a week or so and decided to haul it home today so when i did that i started it to get it on truck and still only running off one cylinder...so when we got to my house to unload it i decided to piss around on my yard quick and all of a sudden it started workin just perfect again both cylinders running and all .....so if any one knows what could be goin on with this plz help i am soo confused...i am not going to take it out untill i get it looked at even tho its running just fine because im scared the same thing mite happen then befor...so any suggestions will help thanks a lot guys!!!!!!