Spark Plug: Testing and Inspection
INSPECT SPARK PLUGNOTE:
- Never use a wire brush for cleaning.
- Never attempt to adjust the electrode gap on used spark plug.
- Spark plug should be replaced every 192,000 km (120,000 miles).
a. Clean the spark plug.
Air pressure: Below 588 kPa (6.0 kg/cm2, 85 psi)
Duration: 20 seconds or less
b. Check the spark plug for any damage on its thread and insulator.
HINT: If damaged, replace the spark plug. Recommended spark plug:
SK16R11 (DENSO made)
IFR5A11 (NGK made)
c. Check the spark plug electrode gap.
Electrode gap: 1.0 to 1.3 mm (0.039 to 0.051 in.)