1995 LAND ROVER DISCOVERY fuel cap release

SFI
29
REPAIR ADD: 09/95 ANTI-TRICKLE FILL VALVE - ADVANCED EVAPS
Service repair no - 19.55.31
Remove
1.Remove the fuel filler neck.
See fuel filler neck
- advanced evaps
2.Release the cobra clip securing the hose to the
liquid/vapour separator and disconnect the hose.
3.Loosen the grub screw on the valve nut, two
complete turns.
4.Loosen the valve nut completely.
NOTE: The nut is held captive by the stub
pipe on the filler neck.
5.Carefully remove the valve and hose assembly
from the filler neckRefit
6.Fit a new 'O' ring to the recess in the stub pipe.
7.Fit the valve and hose assembly to the filler neck
stub pipe, ensuring that the 'O' ring is fitted
around the body of the valve as it is pushed into
the filler neck stub pipe.
8.Hand tighten the nut, then tighten to
3 Nm.
9.Tighten the grub screw to2 Nm.
10.Connect the hose to the liquid/vapour separator
and secure with the cobra clip.
11.Fit the fuel filler neck.
See fuel filler neck -
advanced evaps;refit

19FUEL SYSTEM
2
DESCRIPTION AND OPERATION Basic ignition timing
MEMS provides the optimum ignition timing for the
relevant engine speed and load. The speed and
position of the engine is detected by the crankshaft
sensor which is bolted to, and projects through the
engine adapter plate.
The sensor incorporates an armature which runs
adjacent to a reluctor insert in the flywheel, the insert
consisting of 34 poles spaced at 10°intervals, with
two missing poles 180°apart to identify the T.D.C.
positions.
The sensor 'reads' these poles to provide a constant
up-date of engine speed and crankshaft position to
the ECM
The load signal is provided by the manifold absolute
pressure sensor mounted inside the ECM casing
which detects manifold pressure via a hose connected
to the manifold chamber. The sensor converts
pressure variations into graduated electrical signals
which can be read by the ECMIgnition timing compensation
Coolant temperature sensor
When the ECM receives a low engine temperature
signal from the coolant sensor, it provides optimum
driveability and emissions by advancing or retarding
the ignition timing.
Knock sensor
The knock sensor is a capacitive device mounted in
the cylinder block between nos. 2 and 3 cylinders
below the inlet manifold. The sensor monitors noise
and vibration in the engine and passes this
information to the ECM which is able to identify the
characteristics of the knocking and make the
necessary corrections to the ignition timing of
individual cylinders.
Idle speed control
When the throttle pedal is released and the engine is
at idle, the ECM uses the fast response of ignition
timing to assist idle speed control.
When loads are placed on, or removed from the
engine the ECM senses the change in engine speed
and in conjuction with the opening of the throttle disc
by the stepper motor, advances or retards the ignition
timing to maintain the specified idle speed. When load
is removed from the engine and the stepper motor
returns to it's original position, the ignition timing
returns to the idle setting.
NOTE: Due to the sensitivity of this system
the ignition timing will be constantly
changing at idle speed.

Mpi
7
REPAIR FUEL RAIL AND INJECTORS
Service repair no - 19.60.04 - Rail
Service repair no - 19.60.10 - Injectors
Remove
1.Remove inlet manifold chamber gasket.
See
MANIFOLD AND EXHAUST SYSTEM, Repair,
Manifold Chamber Gasket - Mpi
2.Remove pressure regulator.
3.Remove 4 bolts securing fuel feed hose flange
stiffening bracket, remove stiffening bracket.
4.Release fuel feed hose from fuel rail.
5.Discard 'O' ring.
6.Disconnect 4 injector multiplugs.
7.Move injector harness aside.
8.Remove 2 bolts securing fuel rail to inlet
manifold.
9.Release 4 injectors from inlet manifold.
10.Remove fuel rail complete with injectors.
11.Discard outlet 'O' rings from injectors.
12.Fix protective cap to each injector.
Do not carry out further dismantling if component
is removed for access only.
13.Remove clip(s) securing injector(s) to fuel rail.
14.Remove injector(s).
15.Discard inlet 'O' ring(s) from injector(s).
16.Remove fuel temperature sensor.

86ELECTRICAL
50
REPAIR DIGITAL DIESEL SHUT-OFF VALVE (DDS) - 97 MY
Service repair no - 86.77.00
Remove
1.Remove fuel injection pump.
See FUEL
SYSTEM, Repair, fuel injection pump and
timing
2.Drill into 2 break-off screws to a depth of
approximately 5 mm using a 3.2 mm drill.
CAUTION: Use a drill bushing to guide the
drill during the above.
3.Using an 'Easy-out' remove 2 valve retaining
screws and discard.
4.Release DDS valve from fuel shut-off solenoid.
5.Remove protective cap from fuel shut-off
solenoid electrical connection.
6.Remove fuel shut-off solenoid terminal nut and
remove DDS valve.
Refit
7.Position DDS terminal lead to fuel shut-off
solenoid and secure with nut tightened to
2Nm.
8.Position DDS valve to fuel shut-off solenoid .
9.Position clamping plate to DDS valve and tighten
shear bolts simultaneously until heads shear.
10.Fit fuel injection pump.
See FUEL SYSTEM,
Repair, fuel injection pump and timing; Refit
ANTENNA AMPLIFIER - 97 MY
Service repair no - 86.50.29
Remove
1.Remove RH alpine light trim casing.
See
CHASSIS AND BODY, Repair, alpine light
trim casing
2.Release amplifier to sixth light connector and
seal finisher.
3.Remove screw securing amplifier to body and
release from location.
4.Disconnect co-axial cable from amplifier.
5.Disconnect Lucar from amplifier.
6.Remove amplifier.
Refit
7.Fit amplifier, connect co-axial cable and Lucar to
amplifier.
8.Position amplifier to location and secure with
screw.
9.Secure amplifier lead through seal finisher and
connect to sixth light.
10.Fit RH alpine light trim casing.
See CHASSIS
AND BODY, Repair, alpine light trim casing;
Refit