Spark Plug: Testing and Inspection

Spark Plug Inspection

CAUTION:
- When servicing an iridium / platinum spark plug, do not touch the center electrode. The center electrode on this type of spark plug is slender and can be damaged if a mechanical force is applied.
- Do not clean or adjust gap for iridium / platinum spark plugs.

Inspect spark plug for:
- Electrode wear
- Carbon deposits
- Insulator damage
- Spark plug air gap

If any abnormality is found, replace it with new plug.

Spark plug air gap "a"
: 1.1 - 1.2 mm (0.043 - 0.047 in.)