I just got a 2003 yz450f in a trade. Looks sick and that got me to do a bad thing. I traded a ktm for a yamaha. When the guy brought it he took it out and started it. Its the middle of winter only 10 degrees outaide. It took him a couple 6 kicks. I didn't think much of it because its cold outside. The next day I went out to start it. It fired after 3 kicks not to bad. But a couple days later I was showing it off to my friends by just letting it run. First kick it started to fire then just shut off. Since then can't get it going. We bump started it but it wouldn't run right and died low rpm. We cleaned the carb checked valves. I did a compression test. Only read 30psi! Then did a wet compression test it doubled to 60. I don't know what it could be. Please help and let me know what you think . Also the decompression lever isn't hooked up and there is a wire that is completly fraied going into the bottom of the motor. Please help!