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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.