Ok!!! Here is the problem. This weekend while driving my RZR 1000 it started to over heat. We checked everything. No mud in radiator. It would over heat then go back to good. Hoses would suck tight then go back to normal. Today we tried to go riding and it would not start. It just cranked. Took out the plugs and there is only 45 to 50 PSI coming out of each hole. Battery is good, we got spark, but can not get it to start. What should I TRY????