Spark Plug: Service and Repair

Spark Plug Assembly:

REMOVE OR DISCONNECT

WARNING: If you smoke while handling coated spark plugs, wear gloves to prevent transfer of the coating to cigarettes and subsequent burning of the coating. Wash hands after installing spark plugs.

1. Be sure ignition switch is in "OFF" or "LOCK" position.
2. Spark plug wire harness assemblies from spark plugs. Refer to Spark Plug Wire/Service and Repair. Service and Repair

^ Note positions of wires before removing.

NOTE: Clean dirt and debris from spark plug recess areas.

3. Spark plugs from cylinder head.

NOTE:
^ Be sure spark plugs thread smoothly into cylinder head assemblies and are fully seated. Cross - threading or failing to fully seat spark plugs can cause overheating of spark plugs, exhaust blow-by, or thread damage. Follow recommended torque specifications carefully. Over or under - tightening can also cause severe damage to cylinder head assemblies or spark plug.
^ Check spark plug gap using a wire type gauge before installing. If spark plug gaps are not adjusted correctly, engine idle quality may be seriously affected. A wire type gauge must be used (as opposed to a flat feeler type gauge) to insure an accurate reading.

ADJUST
Set Spark Plug Gap to 1.27 mm (0.050 in).

INSTALL OR CONNECT
1. Spark plugs to cylinder head assemblies. Tighten spark plugs to 27 Nm (20 lb ft).
2. Spark plug wire harness assemblies, routed properly as note during removal.