Spark Plug Inspection
Reference: SPARK PLUG REMOVAL AND INSTALLATION
CAUTION:
- The iridium spark plug has a slender center electrode that is made of a material sensitive to mechanical forces. It may be damaged easily if handled carelessly.
- Do not touch the center electrode of an iridium spark plug. Avoid cleaning it or adjusting its electrode gap.
Check spark plug for the following points:
- Air gap
- Electrode wear
- Carbon deposits
- Insulator damage
If any abnormality is found for iridium spark plug, replace with new spark plug.
If any abnormality is found for nickel spark plug, adjust air gap, clean with spark plug cleaner or replace with new spark plug.
Spark plug air gap "a"
Standard: 1.0 - 1.1 mm (0.039 - 0.043 in.)
Spark plug specification
Iridium type: NGK SILFR6A11
Nickel type: DENSO K16HPR-U11