4 Runner Limited 2WD V6-3.4L (5VZ-FE) (1997)
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Spark Plug: Testing and Inspection
Spark Plugs Inspection
1. Disconnect high-tension cords.
2. Remove ignition coils.
3. Remove spark plugs.
Using a 16 mm plug wrench, remove the 6 spark plugs from the RH and LH cylinder heads.
4. Clean spark plugs.
If the electrode has traces of wet carbon, allow it to dry and then clean with a spark plug cleaner.
Air pressure:
Below 588 kPa (6 kgf/sq. cm, 85 psi)
Duration: 20 seconds or less
HINT: If there are traces of oil, remove it with gasoline before using the spark plug cleaner.
5. Visually inspect spark plugs.
Check the spark plug for thread damage and insulator damage.
If abnormal, replace the spark plug.
Recommended spark plug:
ND: K16TR11
NGK: BKR5EKB-11
