Spark Plug: Service and Repair

Spark Plug Assembly:

REMOVE OR DISCONNECT
1. Be sure ignition switch is in "OFF" or "LOCK" position.
2. Spark plug wire harness assemblies from spark plugs.
^ Note positions of wires before removing.

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

3. Spark plugs from cylinder head assemblies.

NOTICE:
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.

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.