Ok so i have an 05 arctic cat 650 vtwin. I took it out mudding and it was doing fine until i hit one patch it started bogging down. Now at 1/4 throttle it wants to bog down until it shuts off. Not sure if its a fuel or spark issue. I can get it to start with the pull string but not pushing the starter button. I was also thinking maybe the timing slipped when I was goin through the mud? Any help is appreciated.