1995 LAND ROVER DISCOVERY fuel pressure

19FUEL SYSTEM
6
REPAIR 15.Disconnect hose, plug return hose and rail.
Remove cloth.
16.Remove 6 nuts securing fuel rail and ignition coil
bracket to inlet manifold.
17.Release ignition coil bracket from inlet manifold
studs. Place aside.
18.Release fuel rail and injectors from inlet
manifold.
Do not carry out further dismantling if component
is removed for access only.
19.Remove fuel rail and injectors.
20.Remove 2 bolts securing fuel pressure regulator
to fuel rail.
21.Remove pressure regulator assembly.
22.Remove 'O' ring from fuel pressure regulator and
discard.
23.Remove 8 clips securing injectors to fuel rail.
24.Remove injectors from fuel rail.
25.Remove 2 'O' rings from each injector and
discard.Refit
26.Ensure mating surfaces between inlet manifold
and ram pipe housing are clean.
27.Ensure all locations in fuel rail and inlet manifold
are clean.
28.Lubricate and fit new 'O' rings to injectors and
fuel pressure regulator.
29.Fit fuel pressure regulator to fuel rail. Secure
with bolts. Tighten to
10 Nm.
30.Fit injectors to fuel rail. Secure with clips.
31.Position fuel rail to inlet manifold. Engage
injectors, one bank at a time.
32.Position ignition coil bracket on inlet manifold
studs.
33.Secure ignition coil bracket and fuel rail to inlet
manifold with nuts. Tighten to
8 Nm.
34.Remove plugs from fuel feed and return pipes
and rail.
35.Connect hose and tighten clip.
36.Clean feed pipe union and connect fuel feed
pipe to fuel rail. Tighten union to
16 Nm.
37.Connect multiplugs to fuel injectors and fuel
temperature sensor.
38.Remove cloth from inlet manifold.
39.Apply a thin, uniform coating of Loctite 577
sealant to mating face of inlet manifold.
40.Fit ram housing to inlet manifold. Secure with
bolts. Tighten to
24 Nm.
41.Connect purge hose, crankcase breather hose,
servo and pressure regulator vacuum hoses to
ram housing.
42.Fit plenum chamber.
See Plenum Chamber
43.Reconnect battery negative lead.
44.Start engine. Check for leaks around fuel rail and
injectors.

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.

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.

19FUEL SYSTEM
20
REPAIRADD: 09/95 FUEL SYSTEM - DEPRESSURISE - ADVANCED
EVAPS
Service repair no - 19.50.02
WARNING: Fuel pressure of up to 2.5 bar
will be present in the system, even if the
engine has not been run for some time.
Always depressurise the system before
disconnecting any components in the fuel feed
line (between fuel pump and pressure regulator).
The spilling of fuel is unavoidable during this
operation. Ensure that all necessary precautions
are taken to prevent fire and explosion.
NOTE: Fuel pressure can be relieved at
fuel filter unions.
1.Position cloth around relevant union to protect
against fuel spray.
2.Carefully loosen union.
CAUTION: Use two spanners when
loosening or tightening unions.
3.Tighten union once fuel pressure is relieved.
4.Remove cloth.FUEL TANK - ADVANCED EVAPS
Service repair no - 19.55.01
WARNING: Ensure fuel handling
precautions given in section 01
Introduction are strictly adhered to when
carrying out following instructions.
CAUTION: Before disconnecting any part
of fuel system, it imperative that all dust,
dirt and debris is removed from around
components to prevent ingress of foreign matter
into fuel system.
Remove
1.Disconnect battery negative lead.
2.Drain fuel tank completely.
See fuel tank -
draining - advanced evaps
3.Remove 6 screws securing tail door tread strip
and remove tread strip.
4.Remove RH luggage compartment side panel.
See CHASSIS AND BODY, Repair, rear
compartment lower trim panels

SFI
21
REPAIR ADD: 09/95
5.Fold back loadspace carpet and sound
insulation to reveal access panel.
6.Remove 6 screws securing fuel pump access
panel.
7.Remove access panel.8.Disconnect multiplugs from fuel pump and
pressure sensor
9.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.
10.Care must be taken to catch any excess fuel
which may spill from the fuel lines once
removed.
11.Raise rear of vehicle.
WARNING: Support on safety stands.