Corolla L4-1.8L (2ZZ-GE) (2005)
Spark Plug: Testing and Inspection
INSPECT SPARK PLUG
NOTE:
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Never use a wire brush for cleaning.
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Never attempt to adjust the electrode gap on used spark plug.
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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:
SK20R11 (DENSO made)
IFR6A11 (NGK made)
c. Check the spark plug electrode gap.
Electrode gap: 1.0 to 1.3 mm (0.039 to 0.051 in.)