Corolla Sedan 4-Door L4-1587cc 1.6L DOHC MFI (1997)
Spark Plug: Testing and Inspection
SPARK PLUGS INSPECTION
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, thread damage and insulator damage.
If abnormal. replace the spark plug.
Recommended spark plug:
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: 17.6 N.m (180 kgf.cm, 13 ft.lbf)
7. RECONNECT HIGH-TENSION CORDS TO SPARK PLUGS
