Impreza L Sedan F4-2.2L SOHC (1997)
Spark Plug: Service and Repair
Removal and Installation
REMOVAL AND INSTALLATION
CAUTION: All spark plugs installed on an engine, must be of the same heat range.
Spark plug:
1800 cc model
NGK: BKR6E-11
CHAMPION: RC8YC4
2200 cc model
CHAMPION: RC8YC4, RC1OYC4
(Alternate)
NGK: BKR6E-11
NIPPONDENSO: K20PR-U11
1. Remove spark plug cords by pulling boot, not cord itself.
2. Remove spark plugs.
3. When installing spark plugs on cylinder head, use spark plug wrench.
Tightening torque (Spark plug):
21 ± 3 N.m (2.1 ± 0.3 kg-m, 15.2 ± 2.2 ft-lb)
CAUTION: The above torque should be only applied to new spark plugs without oil on their threads.
In case their threads are lubricated, the torque should be reduced by approximately 1/3 of the specified torque in order to avoid their
over-stressing.
4. Connect spark plug cords.