2500 4x2 Pickup V8-5.9L VIN Z (1994)
Fuel Pressure: Testing and Inspection
Fuel Pressure Test
Fuel Pump Module
Fuel systems on these vehicles are equipped with a fuel tank module mounted, combination fuel filter/fuel pressure regulator. The fuel pressure regulator
is not controlled by engine vacuum.
With engine at idle speed, system fuel pressure should be approximately 241-310 kPa (35-45 psi).
Fuel Pressure Test Port
1.
Remove the protective cap at the fuel rail.