My truck is a f250 extended cab with the 5.4 triton v8.I am having problems with my truck cutting out on me while I'm driving it. It has a slight mist to it while idling. I have check all coil packs and injectors and they are fine. Fuel filter is brand ,just changed it. So I'm thinking fuel pump is going bad. Can you tell me what the fuel pressure would be when running normal.