Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual - part 193

IG(w/o STI)-7

Spark Plug

IGNITION

3) Using a nylon brush, etc., clean and remove the

carbon or oxide deposits from the spark plug. If de-

posits are too stubborn, replace the spark plugs.

After cleaning the spark plugs, check the spark

plug gap “L” using a gap gauge. If it is not within the

standard, replace the spark plug.
NOTE:

• Never use a plug cleaner.

• Do not use a metal brush as it may damage the

electrode area.
Spark plug gap L:

Standard

0.7 — 0.8 mm (0.028 — 0.031 in)

IG-02095

IG(w/o STI)-8

Ignition Coil

IGNITION

3. Ignition Coil

A: REMOVAL

Direct ignition type is adopted. Refer to “Spark

B: INSTALLATION

Install in the reverse order of removal.
Tightening torque:

16 N·m (1.6 kgf-m, 11.8 ft-lb)

C: INSPECTION

For inspection procedure, refer to “Diagnostics for

STARTING/CHARGING SYSTEMS

SC(w/o STI)

Page

SC(w/o STI)-2

General Description

STARTING/CHARGING SYSTEMS

1. General Description

A: SPECIFICATION

Specifications for models other than STI are includ-