Fuel Pressure: Specifications

Fuel Pressure

Engine running - 6.2L and 6.8L gasoline 350-430 kPa (51-62 psi)
Engine running - 6.7L diesel 365-503 kPa (53-73 psi)
Key ON Engine OFF (KOEO) - 6.2L and 6.8L gasoline 350-430 kPa (51-62 psi)
KOEO (Key ON Engine OFF) - 6.7L diesel 365-503 kPa (53-73 psi) (a)

a After 30 seconds the fuel pump shuts off and the fuel pressure begins to bleed down to 0 kPa (0 psi).