Removal Procedure
- Remove the fuel rail covers.
- Remove the spark plug wires. Refer to Spark Plug Wire Replacement .
- Loosen each spark plug 1 or 2 turns.
- Brush or use compressed air to remove any dirt around the spark plugs.
- Remove the spark plugs one at a time and place each plug in a tray marked with the corresponding cylinder numbers.
Notice: Allow the engine to cool before removing the spark plugs. Attempting to remove the spark plugs from a hot engine may cause the plug threads to seize, causing damage to cylinder head threads.
Notice: Clean the spark plug recess area before removing the spark plug. Failure to do so could result in engine damage because of dirt or foreign material entering the cylinder head, or by the contamination of the cylinder head threads. The contaminated threads may prevent the proper seating of the new plug. Use a thread chaser to clean the threads of any contamination.
Installation Procedure
- Inspect each spark plug gap. Adjust each plug as needed.
- Hand start the spark plugs in the corresponding cylinders.
- Tighten the spark plugs.
- Install the spark plug wires. Refer to Spark Plug Wire Replacement .
- Install the fuel rail covers.
Specification
Spark plug gap: 1 524 mm (0.060 in)
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten
| • | For cylinder head-new: Tighten the spark plugs to 20 N·m (15 lb ft). |
| • | For cylinder head-all subsequent installations: Tighten the spark plugs to 15 N·m (11 lb ft). |
