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.
CAUTION:
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.
CAUTION:
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.