Spark Plug: Service and Repair

REMOVAL






1. Remove the Coil On Plug (COP). Remove the screw and the coil for each plug.

NOTE: Remove any foreign debris from the spark plug wells with compressed air.






2. Remove the RH spark plugs.






3. Remove the LH spark plugs.






4. Inspect the spark plugs for:
- Deposits bridging spark plug gap (A).
- Wet black deposits (oil fouling) (B).
- Dry black deposits (carbon fouling) (C).
- Overheating (D).
- Deposits fused on spark plug (E).
- Pre-ignition damage (F).
- Normal spark plug (G).






5. Adjust the spark plug as required.

INSTALLATION






1. Install the LH spark plugs.
2. Install the RH spark plugs.






3. Install the COPs.