Spark Plug: Service and Repair

SPARK PLUG (PLATINUM-TIPPED TYPE)

Removal and Installation

Exploded View EM-38:

REMOVAL





1. Remove the engine cover, using power tool.
2. Drain the engine coolant.
3. Disconnect the mass air flow sensor electrical connector and remove the air cleaner case (upper), mass air flow sensor and air cleaner to electric throttle control actuator tube.
4. Remove the intake manifold collector (upper), gasket, and electric throttle control actuator.
5. Remove the six ignition coils.

CAUTION: Do not shock them.





6. Remove the six spark plugs using a suitable tool.
^ If replacing the spark plugs use the correct spark plug for maximum performance.

INSPECTION AFTER REMOVAL





CAUTION:
^ Do not use a wire brush for cleaning.
^ Do not drop or shock spark plug.

If plug tip is covered with carbon, a spark plug cleaner may be used.
Cleaner air pressure: less than 588 kPa (6 kg/cm2, 85 psi)
Cleaning time: less than 20 seconds

Checking and adjusting plug gap is not required between change intervals.





Gap (nominal): 1.1 mm (0.043 in)

INSTALLATION
Installation is in the reverse order of removal.
^ Use standard type spark plug for normal driving conditions.
^ The hot type spark plug is suitable when fouling occurs with the standard type spark plug under conditions such as:
- Frequent engine starts
- Low ambient temperatures
^ The cold type spark plug is suitable when engine spark knock occurs with the standard type spark plug under conditions such as:
- Extended highway driving
- Frequent high engine revolution