1994 JAGUAR XJ6 fuel filter

Rear deck area
Behind rear bulkhead
Inside fuel tank 1
2
3
Inside fuel tank
Fuel
pump to fuel filter
Above rear axle assembly
Fuel filter to fuel rail
Inlet manifold
Inlet manifold
/fuel rail
Mounted on the fuel rail
Fuel regulator to fuel tank
Fuel tank to running
loss
control valve (NAS 4.0L
normally aspirated engine
only)
Running loss control valve
to primary carbon canister
(NAS 4.0L normally
aspirated engine only)
Left side of the fuel tank
4
5
6
7 8
9
10
11
12
13
14
Fuel tank to tank pressure
control (Rochester) valve
Connected between
emission vent lines as
shown on schematic
Rochester valve
to primary
carbon canister
Primary carbon canister to
secondary carbon canister
(NAS 4.0L normally
aspirated engine only)
15
16
17
18
Primary carbon canister to
atmosphere
Left side of vehicle,
in
front of the rear axle
To the right of the primary
carbon canister on the
other side of the vehicle
(NAS 4.0L normally
aspirated engine only).
Primary carbon canister
to
purge valve
Below the left head lamp
module
18
19
20
21
22
m Fuel, Emission Contro & Engine Management (AJ16) - .
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Key to Fig. 1, Fuel System AJ16, page 1
Location I Number Component / Parts
Fuel filler assembly
SRO
19.55.13
19.55.0 1
19.45.08
Fuel tank
Fuel
pump(s)
Fuel pump filter
Fuel feed line
Fuel filter
Fuel feed line
19.40.97
19.25.02
19.40.60
19.60.13 18.10.02
19.45.11
Fuel rail
Fuel injectors
Fuel regulator valve
19.40.85 Fuel return line
Emission vent line
Emission vent line
Running
loss control valve
(NAS only)
Emission vent line
Tank pressure control
(Rochester) valve
17.15.4 1
Emission vent line
Emission vent line
Emission vent line
Primary carbon canister
17.15.13
Secondary carbon canister 17.15.13
Emission vent line
Purge valve
17.50.30
Issue 1 August 1994 2 X300 VSM

striker and the-fuel cap stowage magnet.
The fuel bowl, retained around the filler neck by a clip, containing a drain tube filter located over the mating drain tube,
is rubber moulded onto a steel armature and fitted to the BIW decking panel by five M5 nuts.
The fuel lid latching assembly fitted to the metal armature of the fuel bowl by an M5 nut, includes the locking pin and
the operating actuator.
The actuator operates from the central locking system driven by the security and locking control module
(SLCM).
The fuel tank, mounted across thevehicle behind the passenger compartment rear bulkhead, is held in position by two
retaining straps, tightened by two M5 fixing arrangements.
The fuel tank of AJ16 engined vehicles contains one fuel pump, supplying fuel to the normally aspirated engine and
two fuel pumps, supplyingfuel to the supercharged engine. They are regenerative turbine pumps supplied by
Nippon- Denso. Nominal operating pressure is 3 bar (3.7 bar for supercharged engine) above the manifold depression and
pump delivery is 90 litredhour minimum at 13.2 volts, 3 bar outlet pressure. The pump(s) draw a nominal current of 7 amperes at 13 volts, 3 bar outlet pressure, ambient temperatures. Built in to the pump assembly is a over-pressure
relief valve which blows at 4.5 - 8.5 bar.
Fuel is drawn by the pumps from the fuel tank and is then supplied to the fuel rail via a
70 micron filter and the fuel
feed line connected in series by fuel filter.
The amount of fuel being injected into the engine
is controlled by the fuel injectors combined with the engine control module (ECM). - Any excessive fuel flowing through the system, is returned to the fuel tankvia the fuel regulator valve mounted on the
fuel rail, the fuel return line and the check valve also located inside the tank.
The two filters prevent contaminants from entering the fuel rail and possible damage to the fuel injectors, the engine,
the pump and the underfloor filter.
The fuel pumps are switched on and off by relays controlled by the engine control module
(ECM).
The second fuel pump for the supercharged engine operates only in the higher speed range, switching on at 4000rpm and off at 3200rpm.
The fuel lines are made up of an assembly, combining steel under floor pipes and flexible conductive anti-permeation
tubing. In orderto perform speedy remove and refit operations, the underfloor steel lines are linked through the engine
bay bulkhead to the flexible tubing, leading to the fuel rail and the fuel regulator by using positive sealing, quick-fit
type connectors. The same type connectors, are used to connect the fuel feed and return line to the fuel tank.
Connectors used inside the engine bay are of different sizes tocorrespond with the difference in pipe diameter, whereas
the connectors for the feed and return lines at the fuel tank are the same size.
Except for the return line connector at the fuel tank, two release tools, one for each size of connector are required to
release all remaining connectors.
-~
Fuel, Emission Control & Engine Management (AJ16)
5.1.2 GENERAL DESCRIPTION
m: WORKING ON THE FUEL SYSTEM MAY RESULT IN FUEL AND FUEL VAPOUR BEING PRESENT IN THE
ATMOSPHERE. FUEL VAPOUR IS EXTREMELY FLAMMABLE, HENCE GREAT CARE MUST BE TAKEN WHllST WORKING ON THE FUEL SYSTEM. ADHERE STRICTLY TO THE FOLLOWING PRECAUTIONS:
DO NOT
SMOEIN THE WORK AREA.
DISPLAY 'NO SMOKING
' SIGNS AROUND THE AREA.
ENSURE THAT A
CO2 FIRE EXTINGUISHER IS CLOSE AT HAND.
ENSURE THAT DRY SAND
IS AVAILABLE TO SOAK UP ANY FUEL SPILLAGE.
EMPTY FUEL USING SUITABLE FIRE
PROOF EQUIPMENT INTO AN AUTHORIZED EXPLOSIOWROOF
CONTAINER.
DO NOT EMPTY FUEL
INTO A PIT.
ENSURE THAT WORKING AREA
IS WELL VENTILATED.
ENSURE THAT ANY WORK ON THE FUEL SYSTEM
IS ONLY CARRIED OUT BY EXPERIENCED AND WELL
QUALIFIED MAINTENANCE PERSONNEL.
The fuel filler assembly, supplied complete with serviceable lid, hinge and hinge spring, is fixed to the Body-in-White
(BIW) decking panel by two M5 nuts. Additional parts of the assembly comprise a adjustable rubber buffer, a snap-in
X300 VSM 3 Issue 1 August 1994

Fuel, Emission Control & Engine Management (AJ16)
5.1.6 THROTTLE ASSEMBLY (SUPERCHARGED), RENEW
SRO 18.30.17 THROTTLE POTENTIOMETER
SRO 19.70.07 THROTTLE HOUSING GASKET
SRO 19.70.04 THROTTLE HOUSING
J 12-62 2
Fig. 1
Remove
. Disconnect battery.
. Remove the intercooler intake elbow.
. Raise vehicle on a four-post ramp.
. Remove the rear air duct to throttle body connecting hose.
Undo and remove bolts securing EGR supply pipe to manifold.
Remove EGR supply pipe gasket.
Reposition EGR sensor harness multi-plug from mounting bracket.
. Release throttle outer cable abutment from abutment bracket.
. Disconnect throttle inner cable from throttle linkage.
. Disconnect and remove return spring.
. Disconnect speed control actuator vacuum hose.
. Release cooling system pressure by slowly undoing the tank cap.
Tighten cap after pressure release.
. Remove abutment bracket assembly.
Disconnect idle speed actuator harness multi
-plug.
. Disconnect throttle potentiometer harness multi-plug.
. Fit pipe clamps to throttle housing cooling hoses and disconnect hoses from throttle housing.
Remove
the oil filter cartridge and gasket.
Remove speed control speed control bracket to throttle lever clevis pin and pin
circlip.
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Issue 1 August 1994 10 X300 VSM

+ 17.15.13
17.50.30
Component / parts
Fuel filler assembly
Fuel tank
Fuel pumps
Fuel
pump filter
Fuel feed line
Fuel filter
Fuel feed line
Fuel rail
Fuel injectors
Fuel regulator valve
Fuel return line
Emission vent line
Tank pressure control
(Rochester) valve
Emission vent line
Primary carbon canister
Emission vent line
Purge valve
Emission vent line
Location Number
Rear deck area
1
Behind rear bulkhead 2
Inside fuel tank 3
Inside fuel tank 4
Fuel
pump to fuel filter 5
Above rear axle assembly 6
Fuel filter to fuel rail 7
Inlet manifold
8
Inlet manifold /fuel rail 9
Mounted on the fuel rail 10
Fuel regulator to fuel tank 11
Fuel tank to tank pressure 12
control (Rochester) valve
Connected between
emission vent lines as
shown on schematic 13
Rochester valve to primary 14
carbon canister
Left side
of vehicle, in 15
front of the rear axle
Primary carbon canister to 16
purge valve
Below the left head lamp 17
module
Primary carbon canister
to at-
mosphere
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Issue 1 August 1994 2 X300 VSM

striker and the fuel cap stowage magnet.
The fuel bowl, retained around the filler neck by a clip, containing a drain tube filter located
overthe mating drain tube,
is rubber moulded onto a steel armature and fitted to the BIW decking panel. by five M5 nuts.
The fuel lid latching assembly fitted to the metal armature of the fuel bowl by an M5 nut, includes the locking pin and
the operating actuator.
The actuator operates from the central locking system driven by the Security and Locking Control Module (SLCM).
The fuel tank, mounted across the vehicle behind the passenger compartment rear bulkhead, is held in position by two
retaining straps, tightened by two M5 fixing arrangements.
VI2 engined vehicles are equipped with two fuel pumps located inside the tank. They are regenerative turbine pumps
supplied by Nippon Denso. Nominal operating pressure is 3 bar above the manifold depression and pump delivery
is 90 litres/hour minimum at 13.2 volts, 3 bar outlet pressure. The pump draws a nominal current of 7 amperes at 13 volts, 3 bar outlet pressure, ambient temperatures. Built in to the pump assembly is a over-pressure relief valve which
blows at 4.5 - 8.5 bar.
Fuel is drawn by the pumps from the fuel tank and is then supplied to the fuel rail via a
70 micron filter and the fuel
feed line connected in series by fuel filter.
The amount of fuel being injected into the engine is controlled by the fuel injectors combined with the engine control
module (ECM).
Any excessive fuel flowing through the system, is returned to thefuel tankvia the fuel regulator valve mounted on the
fuel rail, the fuel return line and the check valve also located inside the tank.
The two filters prevent contaminants from entering the fuel rail and possible damage to the fuel injectors, the engine,
the pump and underfloor filter.
The second fuel pump is controlled by the engine control module
(ECM) and works of a mapped fuel map. The pumps
'switch on' time depends on the fuel requirement which is depending on the engine load.
The fuel lines are made up of an assembly, combining steel underfloor pipes and flexible conductive anti
-permeation
tubing. In order to perform speedy remove and refit operations, the underfloor steel lines are linked through the engine
bay bulkhead to theflexibletubing, leading to the fuel rail and the fuel regulator by using positive sealing, quick
fit type
connectors. The same type connectors, are used to connect the fuel feed and return line to the fuel tank.
Connectors used inside the engine bay, are of different sizes to correspond with the difference in pipe diameter, where
- as the connectors for the feed and return lines at the fuel tank are the same size.
Except for the return line connector at the fuel tank, two release tools, one for each size of connector, are required to
release all remaining connectors.
Fuel, Emission Control & Engine Management (V12)
5.2.2 GENERAL DESCRIPTION
WARNING: WORKING ON THE FUEL SYSTEM RESULTS IN FUEL AND FUEL VAPOUR BEING PRESENT IN THE AT- MOSPHERE. FUEL VAPOUR IS EXTREMELY FLAMMABLE, HENCE GREAT CARE MUST BE TAKEN WHILST
WORKING ON THE FUEL SYSTEM. ADHERE STRICTLY TO THE FOLLOWING PRECAUTIONS:
PO NOT SMOKF, IN THE WORK AREA.
DISPLAY 'NO SMOKING
' SIGNS AROUND THE AREA.
ENSURE THAT A
CO2 FIRE EXTINGUISHER IS CLOSE AT HAND.
ENSURE THAT DRY SAND
IS AVAILABLE TO SOAK UP ANY FUEL SPILLAGE.
EMPTY FUEL USING SUITABLE FIRE PROOF EQUIPMENT INTO AN AUTHORIZED EXPLOSION PROOF
CONTAINER.
DO NOT EMPTY FUEL INTO A PIT.
ENSURE THAT WORKING AREA IS WELL VENTILATED.
ENSURE THAT ANY WORK ON THE FUEL SYSTEM
IS ONLY CARRIED OUT BY EXPERIENCED AND WELL
QUALIFIED MAINTENANCE PERSONNEL.
The fuel filler assembly, supplied complete with serviceable lid, hinge and hinge spring, is fixed to the Body-in-White (BIW) decking panel by two M5 nuts. Additional parts of the assembly comprise a adjustable rubber buffer, a snap-in
X300 VSM 3 Issue 1 August 1994

13.2.18 Fuel Filler Flap, Description
The fuel filler flap comprises a hinged flap attached to the body decking panel by two M5 nuts; the flap incorporates
a rubber buffer, snap
-in striker, hinge spring and the fuel cap stowage magnet. The rubber fuel bowl moulding is at- tached via a steel armature to the body reinforcement panel by five M5 nuts and is retained at the filler neck by a clip.
The mating drain tube is fitted with an internal filter.
The fuel filler flap latch mechanism attached
tothe fuel bowl armature bytwo M5 nuts, includes a locking pin and actua- tor which are both serviceable items. The latch actuator operates independently from the central locking system; it is
driven directly
by the security and locking control module. Locking of the fuel filler flap is achieved only by operation
of the key or by the remote rf transmitter.
13.2.19 Filler Flap and Hinge, Renew
. Disconnect vehicle battery ground lead.
With filler cap open, remove hinge securing screws, fuel
. To refit, carry out reversal of the above procedure.
filler cap
and remove flap and hinge assembly.
13.2.20 Filler Cap Retention Magnet, Renew
. With filler flap open, use a blunt flat bladed implement and
CAUTION: Take care not to damage paintwork.
. To refit, carry out reversal of the above procedure.
Disconnect
vehicle battery ground lead.
remove the magnet assembly.
13.2.21 Filler Flap latching Assembly, Renew
. Disconnect vehicle battery ground lead.
. Depress the latching assembly retaining nut and remove
CAUTION: Take care not to damage paintwork.
. To refit, carry out reversal of the above procedure.
the
assembly.
1. Hingedflap 2. Striker 3. Hinge spring 4. Stowage magnet 5. Fuelbowl
Fig. 1 Fuel Filler Flap
X300 VSM Issue 1 August 1994 8
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SPECIFICATION - 1995 MODEL YEAR VEHICLES
Engine See relevant engine service manual
Engine Management System
VI2 ............................................................... Nippondenso
6cyl. .............................................................. LucasGEMS
Cooling System
Water pump
type
............................................................... Centrifugal
Cooling fans
- 6 cyl. ................................................ Two electric fans controlled by
Cooling fans
- VI2 ................................................. One engine driven fan and two
Cooling system control
............................................. Thermostat (two on V12)
Thermostat opening temperature .................................... 88OC
Fully open at ....................................................... 93,5 to 96OC
Filler cap pressure rating ........................................... 1,2 bar
drive
.............................................................. Belt
temperature sensor in radiator
electric fans controlled by
temperature sensor
in radiator
Fuel System Pump
one fitted on 6 cyl. (3.2 Liter and 4.0 Liter normally aspirated)
two fitted on 6
cyl. (4.0 Liter supercharged) and VI2
Electrical, module type, fitted in the tank. Integral 70 micron filter.
Make
.............................................................. Nippondenso
Fuel pressure (nominal)
............................................ 3,O bar
Second
pump switches at:
Pump
type
......................................................... Regenerative turbine
Fuel pressure (supercharged)
....................................... 3,7 bar max.
4.0 Liter supercharged ........................................... in at 4000 RPM
out at 3200 RPM
VI2 ............................................................ load sensitiveswitching
Clutch
Plate diameter .....................................................
Clutch hydraulic fluid ............................................... DOT 4
280mm single plate, LUK
Manual Transmission Ratios (Gefragl
First gear .......................................................... 3,553:l
Second gear ....................................................... 2,041: 1
Third gear ......................................................... 1,400 : 1
Fourth gear
........................................................ 1,000 : 1
Fifth gear
.......................................................... 0,755:l
Reverse ........................................................... 3,553: 1
Issue 1 August 1994 X300 VSM AI-95MY 1