Thomas 173HL II, stalled and will not start.

My Thomas 173 stalled and now it will not start. 2200 hours on the machine. 135 hours on the fuel filter. I opened the fuel injectors, one at a time, and tried to start the motor. No fuel at 3 of the injectors. Fuel at 1 injector.

Thomas 173HL II, stalled and will not start.