- Inspection

Check the spark plug visually.

If the electrode is dry, the spark plug is normal.

If the electrode is wet, check the damage and electrode gap as below.

Check the spark plug for any damage on its thread and insulator.

If there is damage, replace the spark plug.

Check the electrode. Measure the insulation resistance with an ohmmeter.

If the resistance is less than the specified value, adjust the electrode gap.

Specification : 10 MΩ or more

Check the spark plug electrode gap.

If the gap is greater than the maximum, replace the spark plug.

Specification : 0.8 - 0.9 mm (0.0314 - 0.0354 in.)

If adjusting the gap of a new spark plug, bend only the base of the ground electrode. Do not touch the tip.

Never attempt to adjust the gap on a used plug.

- Cleaning

The combustion temporarily becomes unstable, due to the aged fuel and the carbon deposits accumulated on the spark plug(s) after long-term storage.

Step on the accelerator pedal and hold it steady at 4500 rpm with the shift lever in N position to warm up the engine until the temperature of the engine coolant reaches 80°C.

The 2nd method should be performed only if the 1st method fails (the misfire-related codes recur).

Drive the vehicle for over 20 minutes, keeping the engine speed above 3500rpm.

If equipped with manual transaxle, shift the gear properly for keeping the engine speed above 3500 rpm.

Using a spark plug wrench, remove the spark plug (A).

Install in the reverse order of removal.

Tightening torque :

14.7 - 24.5 N.m (1.5 - 2.5 kgf.m, 10.9 - 18.0 Ib-ft)

Operation	Task	Skill	Hours
Remove & Replace	Ignition System · Spark Plugs, R&R	C	1.0
Remove & Install	Ignition System · Spark Plugs, R&I	C	1.0