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My 2008 summit 800 was very hard to start(it always wanted to die, so you had to baby the throttle). When it got warm it would run fine but idled at 800-1000 rpm. Took it out to Cooke City and it had almost no power. Could get it up to 7000 rpm but was gutless(especially when climbing). All of sudden it started bogging out really bad and then died and locked up. Left a trail of antifreeze and antifreeze was all over the bottom of the sled. I think i blew a gasket. But is a cylinder seized too? What should i all start looking at for issues?