Removal and Installation

CAUTION: Do not pull on the ignition wire directly as the wire may separate from the connector inside the boot.

1. Disconnect ignition wires from spark plugs.
2. Loosen spark plugs one-quarter turn and remove dirt or foreign material from spark plug areas of cylinder heads with compressed air.

NOTE: Three different styles of platinum enhanced spark plugs are used. If any spark plug is removed and re-installed, it must be installed in the same cylinder from which it was removed. Each plug has a different part number and use.
- AWSF-32P spark plugs have a platinum-enhanced center electrode and are used in cylinders 5,6,7 and 8.
- AWSF-32PG spark plugs have a platinum-enhanced ground (side) electrode and are used in cylinders 1,2,3 and 4.
- If any spark plug is replaced, use only spark plugs with part number AWSF-32PP as listed on the vehicle emission calibration identification label. This replacement spark plug has double-platinum enhancement on both the center and ground electrode and may be used in all eight cylinders.

3. Remove spark plugs.
4. Inspect condition of spark plugs, clean and adjust spark plug gap if necessary.
5. To install, reverse removal procedures. Tighten spark plugs to 9-20 Nm (7-15 lb ft).