XJR (X308) V8-4.0L SC (AJ26) (1998)
Spark Plug: Service and Repair
Removal
1. Disconnect battery ground cable. Refer to 'Battery, Battery Cable.' See: Starting and Charging/Battery/Battery Cable/Negative
2. Remove air intake tube/meter/air cleaner cover for access.
3. Remove ignition coils; See: Ignition Coil/Service and Repair
4. Remove spark plugs.
5. Clean at components as necessary.
Installation
1. Installation is a reversal of the removal procedure.
Check electrode gap is to the correct specification.
Apply suitable lubricant e.g. Neverseez Compound, to lower four threads of spark plug(s) adjacent to the electrodes.
The lubricant must be applied to full thread depth for at least 180° of the thread circumference.
The electrodes must not be contaminated during this process.