Repairing Ignition Coils for Improved Fuel System Performance in 300Tdi Discovery 19 with Mpi
Mpi
1
REPAIR
KNOCK SENSOR
Service repair no - 18.30.18
Remove
1. Disconnect multiplug from knock sensor.
2. Remove knock sensor.
Refit
3. Clean mating face of cylinder block.
4. Fit knock sensor. Tighten to
15 Nm
5. Connect multiplug.
IGNITION COILS
Service repair no - 18.20.40 - 1 & 4 Cylinders
Service repair no - 18.20.41 - 2 & 3 Cylinders
Remove
1. Disconnect battery negative lead.
2. Disconnect 4 h.t. leads from coils.
NOTE: Mark the position of the h.t. leads
to ensure correct refitment.
3. Disconnect 2 multiplugs from coils.
4. Disconnect crankshaft sensor multiplug.
5. Remove screw securing crankshaft sensor
multiplug to coil bracket.
6. Remove 3 bolts securing coil bracket to bell
housing.
NOTE: Access to the rear bolts is from
under the vehicle.
7. Remove coil assembly.
Refit
8. Position coil assembly to bell housing.
9. Fit 3 bolts and tighten to the correct torque.
10. Secure crankshaft sensor multiplug to coil
bracket with screw.
11. Connect crankshaft sensor multiplug.
12. Connect multiplugs and h.t. leads to coils.
13. Reconnect battery negative lead.
