Spark Plug: Service and Repair

3.0L Shown 3.8L Similar:

REMOVAL
1. Disconnect ignition wires from spark plugs.
2. Loosen spark plugs 1/4 turn and, using compressed air, remove any dirt or foreign material from spark plug areas of cylinder head.

WARNING: EYE PROTECTION IS REQUIRED WHEN USING COMPRESSED AIR OR PERSONAL INJURY MAY OCCUR.

NOTE: Spark plugs in the RH cylinder head are accessed from below the vehicle.

3. Remove spark plugs.
4. Check and adjust spark plug gap.

NOTE: Refer to the Spark Plug Inspection Chart to determine the condition of the spark plugs.

INSTALLATION
1. Follow removal procedure in reverse order.

NOTE: Three different styles of platinum-enhanced spark plugs are produced for the 3.0L engine. Each spark plug has a different part number and use. AWSF-32P spark plugs have a platinum-enhanced center electrode and are used in cylinders 4,5 and 6. AWSF-32-PG spark plugs have a platinum-enhanced ground (side) electrode and are used in cylinders 1, 2 and 3. If any spark plug is removed and reinstalled, it MUST be installed in the same cylinder from which it was removed. If any spark plug is replaced, use only spark plugs with a part number AWSF-32PP as listed on the Vehicle Emission Control Information (VECI) label. This replacement spark plug has double-platinum enhancement on both the center and ground electrode and may be used in all six cylinders.

2. Install spark plugs by hand and tighten spark plugs to 9-20 Nm (80-177 lb in).