Spark Plug: Service and Repair

Changing Spark Plugs (Double Platinum - Tipped Type)
1. Disconnect ignition coil harness connectors.
2. Remove ignition coils.
3. Remove spark plugs with spark plug socket.

2.5L (QR25DE):

Gap (nominal):...................1.1 mm (0.043 inch)

Use standard type spark plug for normal condition.

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 spark knock occurs with the standard type spark plug under conditions such as:
- Extended highway driving
- Frequent high engine revolution







CAUTION: Do not use wire brush for cleaning. If plug is covered with carbon, 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.

4. Install spark plugs.

Spark plug:............................20 - 29 Nm (2.0 - 3.0 kg-m, 14 - 22 ft. lbs.)

5. Install ignition coils and reconnect ignition wires according to numbers indicated on them.

Ignition coils:........................5.4 - 7.3 Nm (0.55 - 0.73 kg-m, 46 - 64 inch lbs.)