Ford F150 Pickup. Manual — part 1715

FUEL SYSTEM

FUEL PRESSURE

Specifications

FUEL PRESSURE SPECIFICATIONS

IGNITION SYSTEM

FIRING ORDER

Illustrations

4.2L

17.3 (16.4)

4.6L & 5.4L

19.4 (18.4)

Pressure Cap

16 psi (110 kPa)

Thermostat Opens

Starts To Open

188-195°F (86.7-90.6°C)

Fully Open

208-215°F (97.8-101.7°C)

NOTE:

Fuel pump performance is a measurement of fuel pressure and volume
availability, not regulated fuel pressure.

Application

(1)

psi (kPa)

CNG Engines

80-120 (276-827)

Gasoline Engines

4.2L & 4.6L

30-45 (207-310)

5.4L

30-55 (207-379)

(1)

With key on and engine off and fuel pump running.

2003 Ford Pickup F150

2003 SPECIFICATIONS F150 Pickup

Fig. 7: Identifying Firing Order & Timing Marks (4.2L)
Courtesy of FORD MOTOR CO.

2003 Ford Pickup F150

2003 SPECIFICATIONS F150 Pickup

Fig. 8: Identifying Firing Order & Timing Marks (4.6L & 5.4L - Coil On Plug)
Courtesy of FORD MOTOR CO.

HIGH TENSION WIRES

Resistance Specifications

On all models, high tension wire resistance should be no more than 7000 ohms per foot.

Wire Routing

2003 Ford Pickup F150

2003 SPECIFICATIONS F150 Pickup

Fig. 9: Identifying Spark Plug Wire Routing (4.2L)
Courtesy of FORD MOTOR CO.

IGNITION TIMING

BASE IGNITION TIMING

NOTE:

On all models with distributorless electronic ignition, manufacturer does not
recommend checking ignition timing, as faulty readings are common and timing
is not adjustable.

Application

Degrees BTDC

2003 Ford Pickup F150

2003 SPECIFICATIONS F150 Pickup