Spark Plug: Testing and Inspection

On-vehicle Inspection

Inspect Spark Plug
1. Remove the ignition coil connector(A) and ignition coil.




2. Using a spark plug socket, remove the spark plug.

CAUTION:
Be careful that no contaminates enter through the spark plug holes.

3. Inspect the electrodes (A) and ceramic insulator (B).




Inspection Of Electrodes





4. Check the electrode gap (A).

Standard
Unleaded : 1.0 - 1.1 mm (0.0394 - 0.0433 in.)