I have a 99'ZRT 800, that i haven't used in 2 years. It has 12,500 miles on it. We went riding this past Fri-Sat in lower Mich. Had to use it as a backup sled, and it would not run. I keep it in a heated pole barn and every year i summerize it, and so on.... I started it up thurs., no problem, in the heated pole barn, took it out and ran it on my buddy's 5 acre lot and it ran like a raped ape, before I loaded it in my enclosed trailer. Saturday, I went to start it, and it would not have it! I changed the plugs and it still would not fire. Does anyone have any suggestions? I have always been able to start this sled, I called it old reliable! My buddy said he had a problem starting it last year when the machine got cold..........