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Fuel Pressure - Trucks

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2007 Mercury Mountaineer, 2007 Mercury Monterey, 2007 Mercury Montego, 2007 Mercury Milan, and 2007 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.
2007 FUEL PRESSURE SPECIFICATIONS - TRUCKS

Engine KOER psi (kg/cm2 ) KOEO psi (kg/cm2 )
Econoline
Diesel (6.0L) 38-51 (2.7-3.6) (1) 0-51 (0-3.6) (1)
Gasoline (6.8L) 55-65 (3.2-4.6) (1) 40-50 (2.1-4.2) (1)
Gasoline (4.2L, 4.6L, 5.4L) 28-45 (2.0-3.2) 35-45 (2.4-3.2)
Mark LT & Pickup
Diesel (6.0L) 45-55 (3.2-3.9) (1) 0-55 (0-3.9) (1)
Gasoline (6.8L) 55-65 (3.9-4.6) (1) 40-50 (2.1-4.2) (1)
Gasoline (4.2L, 4.6L, 5.4L) 28-45 (2.0-3.2) 35-45 (2.4-3.2)
Escape, Escape Hybrid, Mariner & Mariner Hybrid 39 (2.7) 39 (2.7)
Edge & MKX 65 (4.6) (2)
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)
Freestar & Monterey (2) 35-70 (2.4-4.8)
Freestyle 40 (2.8) (3), (4) 40 (2.8) (3), (4)
Ranger 60-65 (4.2-4.6) 60-65 (4.2-4.6)
(1) Operating fuel line primary pump pressure.
(2) Information is not available from manufacturer.
(3) With a manual gauge, the fuel pressure will be lower.
(4) Based on 60°C (140°F) fuel rail temperature, at fuel rail temperatures above 60°C (140°F), for example hot starts, the fuel rail pressure increases based on temperature up to 448 kPa (65 psi).