I have a 1972 Arctic Cat Cheetah 440 (Kaw motor) replaced the(Walbro-WD carb.) with a (Tillotson-HD). Starts up fine good but when you ride it for about 10min. It starts to die when you let of the gas after running it fairly hard through deep powder. If I pull off the impulse hose leading out of the crankcase and fan the throttle it will go again. Oh yea and this is done while riding the sled. When It dies or I turn it off the motor seams really hot and I also noticed vapor,smoke coming out of the carb. Any questions??
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