I have a arctic cat 1995 ext 550 liquid cooled engine it starts and idles fine but when you run it at high rpm for 60- 80 feet it shuts down like a kill switch was hit if it sits for 1-2 minutes it starts up fine and repeats it self i have check all hoses and checked the filter all was fine ok tried a inline sparlk tester on a stand and it has spark even as it starts to shut down