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Fuel Pressure - Trucks

2008 FUEL PRESSURE SPECIFICATIONS - TRUCKS

Engine KOER psi (kg/cm2 ) KOEO psi (kg/cm2 )
Econoline
Diesel (6.0L) 38-51 (2.7-3.6) 0-51 (0-3.6)
Gasoline (4.6L, 5.4L ) 28-45 (2.0-3.2) 35-45 (2.4-3.2)
Gasoline (6.8L) 55-65 (3.9-4.6) (1) 40-50 (2.8-3.5) (1)
Edge & MKX 65 (4.6) (2)
Escape, Escape Hybrid, Mariner & Mariner Hybrid 39 (2.7) 39 (2.7)
Expedition & Navigator 65-71 (4.6-4.8) 62 (4.3)
Explorer & Mountaineer 30-40 (2.1-2.8) 30-40 (2.1-2.8)
Explorer Sport Trac 30-40 (2.1-2.8) 30-40 (2.1-2.8)
Mark LT & Pickup
Diesel (6.4L) 4-7 (.28-.48) 4-7 (.28-.48) (3)
Gasoline (4.2L, 4.6L, 5.4L) 28-45 (2.0-3.2) 35-45 (2.4-3.2)
Gasoline (6.8L) 28-45 (2.0-3.2) 35-45 (2.4-3.2)
Ranger 60-65 (4.2-4.6) 60-65 (4.2-4.6)
(1) Measured by the fuel rail pressure (FRP) PID using the vehicle communication module (VCM) and integrated diagnostic system (IDS) with appropriate hardware, or equivalent scan tool. Mechanical gauge fuel pressure readings may vary from scan tool readings.
(2) Information is not available from manufacturer.
(3) After 30 seconds the fuel pump will shut off and the fuel pressure will begin to bleed down to 0 kPa (0 psi).