Spark Plug: Service and Repair

Spark Plug Replacement


Removal Procedure

1. Remove the spark plug wires. Refer to Spark Plug Wire Replacement.

2. Loosen each spark plug 1 or 2 turns.

3. Use a brush, or use compressed air in order to remove any dint from the spark plugs.

4. Remove the spark plugs one at a time and place each plug in a tray marked with the corresponding cylinder numbers.







Installation Procedure

1. Inspect each spark plug gap. Adjust each plug as needed.

Specification

Spark plug gap: 1.01 mm (0.040 in).

2. Hand stan the spark plugs in the corresponding cylinders.

Notice: Refer to Fastener Notice in Cautions and Notices.

3. Tighten the spark plugs. Tighten

^ Tighten the 5.7 L engine spark plug on a NEW cylinder head to 20 N.m (15 lb ft).

^ Tighten the 5.7 L engine spark plug on subsequent installations to 15 N.m (11 lb ft).

4. Install the spark plug wires. Refer to Spark Plug Wire Replacement.