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Fuel Pressure

FUEL PRESSURE SPECIFICATIONS

Engine psi (kg/cm2 )
Natural Gas Vehicle (1) 80-120 (5.6-8.4)
Diesel
Diesel Models - Except 1998 1/2 Econoline (2) 30-80 (2.1-5.6)
1998 1/2 Econoline (3)
Gasoline
Continental, Escort & Tracer (4) 35-55 (2.5-3.9)
Contour (2.5L), Cougar (2.5L) & Mystique (2.5L) (4) 45-60 (3.2-4.2)
Ranger
Gasoline (4) 56-72 (3.9-5.1)
Flex Fuel (4) 47-63 (3.3-4.4)
Villager (5) 34 (2.4)
All Others (4) 30-45 (2.1-3.2)
(1) With engine speed at 2500 RPM.
(2) Measure at regulator block, at wide open throttle and under full load.
(3) Vehicle is equipped with an electric fuel pump. With ignition on, measure fuel pressure at cylinder head. Fuel pressure should be 30 psi (2.1 kg/cm2 ). Measure at outlet side of fuel pump, at wide open throttle and under full load. Fuel pressure should be 30-80 psi (2.1-5.6 kg/cm2 ).
(4) With key on and engine off.
(5) With engine running.
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