trucks a 2011 f-650 utility truck,, will not start,, Engine ser # is 73177479 and is a ISB6.7 240. Seems like while cranking it will build 5-6000lbs rail pressure and fuel pump actuator is open. turns and showing rpm and signals from engine position sensors,, power to the Actuator ect??? Plenty of fuel but just don't seem to be building enough pressure to injectors??? Any ideas would be great!! My emails a5cos@aol.com