Spark Plug: Service and Repair

SPARK PLUGS

REMOVAL

IMPORTANT: Before removing the spark plugs, make sure water and other debris in the spark plug wells are blown out.




1. Remove spark plug wire connector position assurance (CPA) attachment nuts and CPA.
2. Twist boot to break any bonding. Gently pull spark plug boots off of spark plugs.

IMPORTANT:
^ Do not use a flexible extension socket to remove spark plugs. Damage could occur to the spark plug insulator.
^ Use only a spark plug socket that has a rubber insert to hold the spark plug in place. The spark plug porcelain may crack if a deep well socket without a rubber insert is used.

3. Remove spark plugs.

INSTALLATION

IMPORTANT: Make sure the gasket is on the spark plug.




1. Set gap on spark plugs to 1.02 mm (0.040 in.).

IMPORTANT: Always coat spark plug threads with anti-seize compound before installation.

2. Install spark plugs.

Torque:
Spark Plug-to-Head: 27 N.m (20 ft-lbs)

3. Inspect spark plug wires. Replace any wire that is worn or chaffed.

IMPORTANT:
^ If boot is torn or ripped, a new wire must be installed. Do not repair leads from which the terminals have been pulled off. Replace the wire.
^ Install the spark plug wires on the correct spark plugs as indicated on each spark plug wire. Make sure routing of wire on engine is away from moving parts and exhaust.

4. Install spark plug wires. Press boots onto spark plugs until click is heard or felt.
5. Install spark plug wire CPAs and attachment nuts.

Torque:
Battery Terminal Bolts: 17 N.m (13 ft-lbs)

6. Start engine to verify no misfire exists.