300Tdi Discovery
MFI
7
REPAIR
FUEL PRESSURE REGULATOR
Service repair no - 19.45.06
Remove
1. Depressurise fuel system.
See Depressurising
Fuel System
2. Disconnect battery negative lead.
3. Remove plenum chamber.
See Plenum
Chamber
4. Release clip and disconnect fuel return hose
from regulator.
5. Disconnect vacuum hose from regulator.
6. Remove 2 bolts securing pressure regulator to
fuel rail.
7. Release regulator from fuel rail and withdraw.
8. Remove and discard ’O’ ring.
Refit
9. Lightly coat ’O’ ring with silicon grease 300 and
fit to regulator.
10. Reverse removal procedure.
11. Reconnect battery and pressurise fuel system.
Check there are no fuel leaks around regulator
connections.
FUEL RAIL-INJECTORS R/H AND L/H
Service repair no - 19.60.04 - Rail
Service repair no - 19.60.01 - Injectors
Remove
1. Depressurise fuel system.
See Depressurising
Fuel System
2. Disconnect battery negative lead.
3. Remove plenum chamber.
See Plenum
Chamber
4. Remove ram housing.
See Ram Housing
NOTE: Place cloth over ram tube openings
to prevent ingress of dirt.
5. Loosen clip and disconnect fuel return hose from
regulator.
6. Loosen union and disconnect fuel supply hose
from fuel rail.
7. Disconnect multi-plug from fuel temperature
sensor.
8. Disconnect multi-plugs from injectors.
9. Remove four bolts securing fuel rail support
brackets to intake manifold. Lay injector
harnesses to one side.
