FIRING ORDERS
NOTE: To avoid confusion, replace spark plug wires one at a time.
Fig. 1: 5.8L engine Firing order: 1-3-7-2-6-5-4-8 Distributor rotation: Counterclockwise
Fig. 2: 4.9L engineFiring order: 1-5-3-6-2-4Distributor rotation: Clockwise
Fig. 3: 5.0L and 7.5L enginesFiring order: 1-5-4-2-6-3-7-8Distributor rotation: Counterclockwise
Fig. 4: 6.9L and 7.3L Diesel enginesInjection order: 1-2-7-3-4-5-6-8
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