I have a 231 but have not encountered this problem. I did have something similar happen with another tractor. I changed the fuel filter and cleaned out sediment collected in the tank and system. If you have not done this already it might be a good time to do so. When you prime the system by cracking the fittings it will at least confirm the pump is delivering the fuel to each injector. If that didn't work I'd check the pressure on the pump.