I have an 05 T250 that starts and runs fine when cold. I ran it for about an hour or so and it lost power. Found the pumper bulb mashed flat. May be a vent in the tank now that I think about it. I bled the injectors and restarted the machine after about 30 mins. Ran it for another hour or so and it ran fine. Killed it and would not fire back up. Let it set for about an hour and it fired right up. I just bought this machine with about 2800 hours and seems to be tight and the maintenance was kept up. It was an RSC rental unit. The display says it was serviced 20 hours ago. What should I check first an I am not very familiar with the machine yet?