Range Rover P38
MAINTENANCE
3
MAINTENANCE
UNDER BONNET MAINTENANCE
CHECK COOLING, INTERCOOLER AND HEATER
SYSTEMS FOR LEAKS, HOSES FOR SECURITY
AND CONDITION. TOP UP AS NECESSARY.
CAUTION: Cooling system hoses should
be changed at first signs of deterioration.
RENEW SPARK PLUGS
CAUTION: Take great care when fitting
spark plugs not to cross-thread plug,
otherwise costly damage to cylinder head
will result. It is essential that correct type of spark
plugs is fitted. Incorrect grade of plugs may lead
to piston overheating and engine failure. Only use
approved spark plugs, use of unapproved spark
plugs may cause the misfire detection system to
malfunction.
Remove
1. Disconnect battery negative lead.
2. Remove H.T. leads from spark plugs.
NOTE: Note lead connections to ensure
correct re-assembly.
CAUTION: To avoid damage to H.T. leads,
remove them by pulling the rubber boot
NOT the lead.
3. Remove plugs and washers.
4. Ensure plugs are set to correct gap: 1.0
±
0.05
mm (0.040
±
0.002 in).
See FUEL SYSTEM,
Repair.
NOTE: Do not attempt to clean or adjust
gaps on spark plugs fitted after 99MY. If a
spark plug problem exists, try substituting
the defective spark plug with a new one.
5. Fit new spark plugs and washers. Tighten to
20
Nm (15 lbf ft)
6. Ensure H.T. leads are correctly refitted.
See
FUEL SYSTEM, Repair.
7. Reconnect battery negative lead.