Tune Up Specifications (1997-1999 5.4L V8 Ford E150, E250, E350)

Here you'll find the essential tune-up specifications for the 1997-1999 5.4L V8 Ford E150, E250, and E350.

APPLIES TO: Applies to the following vehicles:

• 5.4L V8 Ford E150: 1997, 1998, 1999.
• 5.4L V8 Ford E250: 1997, 1998, 1999.
• 5.4L V8 Ford E350: 1997, 1998, 1999.

Ignition System Specifications

Spark Plug Gap	Torque
0.052-0.056 inches (1.32-1.42 MM)	7-14 Ft. lbs. (9-20 N.m.)

Base Ignition Timing
Non adjustable.

OE Spark Plug
Motorcraft AWSF-32PP

Firing Order
1-3-7-2-6-5-4-8

WIRING DIAGRAM: You can find the fuel injector circuits wiring diagram here:

• Ignition Coils Circuit Wiring Diagram (1997-1999 5.4L V8 Ford E150, E250, E350)

Fuel System Specifications

The electric fuel pump is located inside the fuel tank.

Fuel Pressure With The Key On Engine Off
30-45 PSI

WIRING DIAGRAM: You can find the fuel pump wiring diagram here:

• Fuel Pump Circuit Wiring Diagram (1997-1999 4.6L, 5.4L V8 Ford E150, E250, E350)

Fuel Injector Resistance
10-18 Ohms (individual resistance at room temp).

WIRING DIAGRAM: You can find the fuel injector circuits wiring diagram here:

• Fuel Injector Circuit Wiring Diagram (1997-1999 4.6L, 5.4L V8 Ford E150, E250, E350)

Drive Belt Routing Diagram

Upper To Lower Intake Manifold Bolt Torque Specifications

The illustration above shows the upper to lower intake manifold bolt tightening sequence to avoid damage to the intake manifold gasket or vacuum leaks.

NOTE: Install the intake manifold gaskets without any type of sealer.

Upper Intake Manifold Bolt Torque Specifications (Inch Lbs.)
STEP 1: 18 Inch Lbs.
STEP 2: 71-106 Inch Lbs.

Upper Intake Manifold To Cylinder Head Bolt Torque Specifications

The illustration above shows the lower intake manifold to cylinder head bolt tightening sequence to avoid damage to the intake manifold gasket or vacuum leaks.

NOTE: Install the intake manifold gaskets without any type of sealer.

Upper Intake Manifold Bolt Torque Specifications
15-22 Ft. Lbs.

Exhaust Manifold Bolt Torque Specifications

NOTE: Install the exhaust manifold gaskets without any type of sealer.

Exhaust Manifold To Cylinder Head Bolt Torque Specifications
17-20 Ft. Lbs.

Cylinder Head Bolt Loosening Sequence

Cylinder Head Bolt Torque Specifications

The illustration above shows the cylinder head bolt tightening sequence.

NOTE: Use new cylinder head bolts. The 5.4L V8 engine uses torque-to-yield (TTY) cylinder head bolts and are not reusable.

Before installing the new cylinder head bolts, oil the underneath of the head bolt with engine oil. This is the part of the bolt that makes contact with the cylinder head.

IMPORTANT: Do not oil the cylinder head bolt threads.

NOTE: Install the cylinder head gasket without any type of sealer.

Cylinder Head Torque Specifications
Step 1	28-31 Ft. Lbs. (37-43 N.m) NOTE: Bolts must be tightened in sequence.
Step 2	Additional 85°- 95°
Step 3	Loosen all bolts 1 full turn (360°) - NOTE: Loosen in sequence.
Step 4	28-31 Ft. Lbs. (37-43 N.m)
Step 5	Additional 85°- 95°
Step 6	Additional 85°- 95°