4 Runner 2WD L4-2693cc 2.7L DOHC MFI (1997)
Spark Plug: Testing and Inspection
Spark Plugs
1. Disconnect high-tension cords from spark plugs.
2. Remove spark plugs.
Using a 16 mm plug wrench, remove the spark plug.
3. Clean spark plugs.
Using a spark plug cleaner or wire brush, clean the spark plug.
4. Visually inspect spark plugs.
Check the spark plug for electrode wear, threads damage and insulator damage.
If abnormal, replace the plugs.
Recommended spark plugs:
ND: K16R-U
NGK: BKR5EYA
5. Adjust electrode gap.
Carefully bend the outer electrode to obtain the correct electrode gap.
Correct electrode gap: 0.8 mm (0.031 in.)
6. Install spark plugs.
Using a 16 mm plug wrench, install the spark plug.
Torque: 20 N.m (200 kgf.cm, 14 ft.lbf)
7. Reconnect high-tension cords to spark plugs.
