Johndeer 3038e stops running just like you have shut off the gas after the first two hours, after it stops it will start and only run for a second than stops. I`v drained the tank and cleaned it out by sobbing it to see if their was anything in the tank , nothing. I replaced the fuel with new diesel also put new fuel filter, fuel pump and flushed radiator new fluid, tractor is only two years old has 72 hours. What would cause this problem,if you let it sit for a hour or more it will start and run maybe for a hour. Please help on this problem.