Impreza GT F4-2.5L Turbo (2009)
4. Disconnect the connector from ignition coil.
5. Remove the ignition coil.
NOTE: Turn #4 ignition coil by 180 degrees to remove it.
6. Remove the spark plug with a spark plug socket.
INSTALLATION
1. RH SIDE
Install in the reverse order of removal.
Tightening torque (Spark plug): 21 N.m (2.1 kgf.m, 15.5 ft.lb)
Tightening torque (Ignition coil): 16 N.m (1.6 kgf.m, 11.8 ft.lb)
2. LH SIDE
Install in the reverse order of removal.
Tightening torque (Spark plug): 21 N.m (2.1 kgf.m, 15.5 ft.lb)
Tightening torque (Ignition coil): 16 N.m (1.6 kgf.m, 11.8 ft.lb)
Tightening torque (Air pump duct): 9 N.m (0.9 kgf.m, 6.6 ft.lb)