fuel LAND ROVER DISCOVERY 1995 Workshop Manual

SFI
7
REPAIR FUEL TEMPERATURE SENSOR
Service repair no - 19.22.08
Remove
NOTE: Because fuel leakage will not occur
when sensor is removed, it is not
necessary to depressurise the fuel system
for this operation.
1.Disconnect battery negative lead.
2.Disconnect multiplug from fuel temperature
sensor.
3.Remove sensor from fuel rail.
Refit
4.Ensure sensor and location in fuel rail are clean.
5.Fit sensor. Tighten to
17 Nm.
6.Connect multiplug.
7.Reconnect battery negative lead.

19FUEL SYSTEM
8
REPAIR IGNITION COILS
Service repair no - 18.20.45 - Set
Service repair no - 18.20.43 - Each
Service repair no - 18.20.44 - Extra - Each
Remove
1.Disconnect battery negative lead.
2.Disconnect H.T. leads from ignition coils. Note
positions of leads.
3.Place H.T. leads aside.
4.Disconnect ignition coil multiplug.
5.Remove 4 nuts securing coil bracket.
6.Release ignition coil bracket from inlet manifold
studs.
7.Manoeuvre coil/bracket assembly from behind
plenum chamber and remove.
8.Remove terminal cover. Note lead positions.
9.Remove 2 nuts securing leads to coil terminals.
10.Remove leads from terminals.
11.Remove 3 Torx screws securing ignition coil to
bracket and remove coil.Refit
12.Fit ignition coil to bracket. Secure with screws.
13.Connect leads to terminals. Secure with nuts.
14.Fit terminal cover.
15.Position ignition coil bracket on inlet manifold
studs.
16.Secure fuel rail and ignition coil bracket with
nuts. Tighten to
8 Nm.
17.Connect multiplug.
18.Connect H.T. leads to respective coil towers.
19.Reconnect battery negative lead.

19FUEL SYSTEM
10
REPAIR KNOCK SENSOR
Service repair no - 18.30.28 - Sensor - LH
Service repair no - 18.30.30 - Sensor - RH
CAUTION: Due to the sensitivity of the
sensors, do not apply tape or sealant to
sensor threads.
Remove
1.Raise vehicle on ramp.
2. RH Sensor only:Remove bolt securing starter
motor heatshield to RH engine mounting.
3.Release heatshield clip from starter solenoid.
4.Move heatshield aside for access to knock
sensor.
5. Both sensors:
Disconnect sensor multiplug.
6.Remove sensor.
Refit
7.Clean sensor and mating face.
8.Fit sensor. Tighten to
16 Nm.
9.Connect sensor multiplug.
10. RH Sensor only:Manoeuvre heatshield into
position.
11.Secure clip to solenoid.
12.Align bracket to mounting and fit bolt. Fit and
tighten bolt.
13.Lower ramp.
CAUTION: Failure to tighten sensor to
correct torque will result in malfunction or
sensor damage.

SFI
11
REPAIR FUEL PRESSURE REGULATOR
Service repair no - 19.45.06
Remove
1.Disconnect battery negative lead.
2.Depressurise fuel system.
See Fuel System -
Depressurise
3.Position cloth over fuel feed union, slacken union
to release fuel pressure, then re-tighten union.
4.Release fuel return hose clip. Remove fuel
return hose from regulator connecting pipe.
5.Plug connections.
6.Remove 4 nuts ignition coil bracket to inlet
manifold.
7.Release ignition coil bracket from inlet manifold
studs and place aside.
8.Release regulator connecting pipe from clip.
9.Disconnect vacuum hose from fuel pressure
regulator.
10.Remove 2 bolts securing fuel pressure regulator
to fuel rail.
11.Remove fuel pressure regulator assembly.
12.Remove 'O' ring and spacer ring from fuel
pressure regulator. Discard 'O' ring.
13.Release clip and remove connecting pipe from
regulator.
14.Fit plugs to regulator and rail.

19FUEL SYSTEM
12
REPAIR Refit
15.Ensure locations on fuel pressure regulator and
fuel rail are clean.
16.Fit new spacer ring and 'O' ring to fuel pressure
regulator. Lubricate 'O' ring with silicone grease.
17.Fit pressure regulator assembly to fuel rail.
18.Secure regulator connecting pipe in clip.
19.Secure with bolts. Tighten to
10 Nm.
20.Align ignition coil bracket to inlet manifold studs.
21.Secure ignition coil bracket and fuel rail to inlet
manifold with nuts. Tighten to
8 Nm.
22.Remove plugs.
23.Connect return pipe to regulator connecting pipe.
Secure with clip.
24.Connect vacuum hose to fuel pressure regulator.
25.Remove cloth.
26.Reconnect battery negative lead.
27.Start engine. Check for leaks around fuel
pressure regulator, fuel feed and fuel return
unions.IDLE AIR CONTROL (IAC)
Service repair no - 19.22.54
Remove
1.Disconnect battery negative lead.
2.Disconnect IAC multiplug.
3.Remove 2 bolts securing IAC to plenum.
4.Remove IAC.
5.Remove gasket and discard.
Refit
6.Ensure all mating faces are clean.
7.Using a new gasket, fit IAC to plenum. Secure
with bolts. Tighten to
2.3 Nm.
8.Connect multiplug.
9.Reconnect battery negative lead.

19FUEL SYSTEM
14
REPAIR
19.Disconnect hoses and remove plenum chamber.
20.Place cloth over ram pipes to prevent ingress of
foreign matter.
21.Remove 4 bolts securing water jacket to plenum
chamber. Remove water jacket. Remove gasket
and discard.
22.Remove 3 bolts securing throttle linkage bracket
to plenum chamber. Remove bracket. Collect
return spring.
23.Remove 2 Torx bolts securing TP sensor.
Collect clamp plate. Remove TP sensor.
24.Remove 2 bolts securing IAC. Remove motor.
Remove gasket and discard.

19FUEL SYSTEM
16
REPAIRADD: 09/95 RELAY MODULE - ADVANCED EVAPS
Service repair no - 18.30.71
Remove
1.Release module from bracket.
2.Disconnect 2 multiplugs from module.
3.Remove module.
Refit
4.Position module, connect multiplugs and secure
to bracket.FUEL FILTER - ADVANCED EVAPS
Service repair no - 19.25.02
Remove
WARNING: Spilling of fuel is unavoidable
during this operation. Ensure all
necessary precautions are taken to
prevent fire and explosion.
WARNING: Ensure fuel handling
precautions given in section 1 -
Introduction are strictly adhered to when
carrying out following instructions.
1.Depressurise fuel system.
See fuel system -
depressurise - advanced evaps
2.Raise rear of vehicle.
WARNING: Support on safety stands.
3.Clean area around hose connections to prevent
ingress of foreign matter into fuel system. Clamp
inlet and outlet hoses to prevent fuel spillage
when disconnecting hoses.
4.Loosen 2 fuel line unions and disconnect hoses.
Remove and discard 'O' rings. Plug ends of
hoses to prevent ingress of dirt.
CAUTION: Use two spanners when
loosening or tightening unions.
5.Remove nut and bolt securing fuel filter bracket
to chassis and remove filter from bracket.

SFI
17
REPAIR ADD: 09/95 Refit
6.Fit a NEW filter to bracket.
NOTE: Ensure direction of flow arrow
stamped on canister is correct.
7.Position filter mounting bracket to chassis and
secure with nut and bolt.
8.Remove plugs from fuel hose ends.
9.Lubricate NEW 'O' rings with clean fuel and fit to
fuel hoses.
10.Connect fuel hoses to filter and tighten unions to
18 Nm.
CAUTION: Use two spanners when
loosening or tightening unions.
11.Remove stand(s) and lower vehicle.
12.Run the engine to check for any fuel leaks.FUEL PUMP AND GAUGE SENDER UNIT -
ADVANCED EVAPS
Service repair no - 19.45.03
A plastic fuel tank with a combined fuel pump and
gauge sender unit is fitted. The top flange of the pump
also houses a pressure sensor which is not removable
from the pump. The fuel pump is accessed through a
panel in the load space floor.
WARNING: Ensure that fuel handling
precautions given in 01 - Introduction are
strictly adhered to when carrying out
following instructions.
CAUTION: Before disconnecting any part
of fuel system, it is imperative that all dust,
dirt and debris is removed from around
components to prevent ingress of foreign matter
into fuel system.
Remove
1.Depressurise fuel system.
See fuel system -
depressurise - advanced evaps
2.Disconnect battery negative lead.
3.Check the amount of fuel in the tank. If the tank
is full, drain 2.4 US gallons (9 litres) minimum.
See fuel tank - draining - advanced evaps
4.Remove 6 screws securing tail door tread strip
and remove tread strip.
5.Remove RH luggage compartment side panel.
See CHASSIS AND BODY, Repair, rear
compartment lower trim panels

19FUEL SYSTEM
18
REPAIRADD: 09/95
6.Fold back loadspace carpet and sound
insulation to reveal access panel.
7.Remove 6 screws securing fuel pump access
panel.
8.Remove access panel.
9.Disconnect multiplugs from fuel pump and
pressure sensor.
10.Release vent hose from pressure sensor body.
11.Noting their fitted positions, disconnect both fuel
connections by pressing the black release
latches on each connector and pushing the
connector back down the line. Care must be
taken to catch any excess fuel which may spill
from the fuel lines once removed.

SFI
19
REPAIR ADD: 09/95
12.Using service tool LRT-19-009 loosen and
remove the metal locking ring.
13.Prise the pump from the tank opening using a
blunt instrument under the edge of the pump
flange. Once clear of the seal, tip the pump to
the right to allow fuel contained in the body of
the pump to drain into the tank.
CAUTION: Do not lift the pump from the
tank using the feed and return stubs.
14.Remove and discard seal.Refit
15.Fit NEW pump seal to tank opening.
16.Carefully lower pump into tank opening, pressing
firmly on the pump top flange to allow correct
positioning.
NOTE: Ensure location tag on pump top
flange is engaged correctly to tank
opening lip.
17.Fit locking ring and tighten to
35 Nmusing
service tool LRT-19-009.
18.Connect both fuel lines to the pump by pushing
the connectors down each line square to the
pump connection until the connectors positively
latch.
19.Connect vent hose to pressure sensor body.
20.Connect multiplugs to fuel pump and pressure
sensor.
21.Reconnect battery negative lead.
22.Refill tank with drained fuel.
23.Run the engine to check for any fuel leaks.
24.Fit access panel and secure with screws.
25.Reposition loadspace sound insulation and
carpet.
26.Fit RH luggage compartment side panel.
See
CHASSIS AND BODY, Repair, rear
compartment lower trim panels
27.Fit tail door tread strip and secure with screws.