300Tdi Discovery
MAINTENANCE
5
MAINTENANCE
2. Clean or replace spark plugs as applicable.
3. It is essential that correct type of spark plugs are
fitted.
4. Incorrect grade of plugs may lead to piston
overheating and engine failure.
Remove
5. Disconnect battery negative lead. Remove H.T.
leads from spark plugs.
6. Remove plugs and washers.
7. When pushing leads onto plugs, ensure that
shrouds are firmly seated.
Fitting H.T. leads
8. Ensure replacement H.T. leads are correctly
refitted as illustrated.
Failure to observe this instruction may result in
cross-firing between two closely fitted leads
which are consecutive in firing order.
3.9 V8
4.0 V8
