Fuel Pump

7.3L Diesel
Operating Fuel Line Primary Pump Pressure 352±28 kPa (51±4 psi)
Key on/Engine Running 276-414 kPa (40-60 psi)
Key on/Engine Off 0-414 kPa (0-60 psi)

Fuel is supplied to the injector at approximately 483 kPa (50-70 psi) through fuel rails in the cylinder heads.