vacuum JAGUAR X308 1998 2.G Repair Manual

12. Reconnect the air cleaner cover.
Fit the five clips which secu re the air cleaner cover.

13. Connect the intake tube to the throttle body.
1. Connect the intake tube to the throttle body.
2. Fit the two bolts which secure the intake tube to the throttle body.
14. Reconnect the air flow meter multi-plug.
15. Fit a new strap to secure the vacuum pipe to the induction
elbow.

16. Connect the breather pipe to the A-Bank camshaft cover.
1. Fit a new O-ring seal to the breather pipe.
2. Reconnect the breather pipe to the stub pipe.
17. Refill the cooling system. Refer to Operation (SC) (26.10.01).
18. Connect the battery and fit the battery cover.

ENSURE THAT ALL FIRE PREVENTION PROCEDURES ARE ACTIVE.
BEFORE PROCEEDING, IT IS ESSENTIAL THAT THE WARNING NOTES GIVEN IN SECTION 100-00 (UNDER THE
HEADING 'SAFETY PRECAUTIONS') ARE READ AND UNDERSTOOD.

9. Depressurise the fuel system.
Ensure that the ignition is switched off and remove the
valve cap from the fuel cross-over pipe. Place a cloth
under the valve to collect any spillage.
Place a closed container, su itable for collecting fuel,
adjacent to the vehicle. Remove the lid.

10. Connect the fuel injection pressure test equipment 310 - 058
(or other suitable type). Insert the drain / bleed tube into the
fuel container. Follow the ma nufacturer's instructions and
depressurise the fuel system.
11. Store the drained fuel safely and ensure that the lid is closed
securely. Remove the equipmen t and discard the cloth from
beneath the valve. Refit the valve cap.

12. Disconnect the breather pipe from the A-Bank camshaft
cover.
1. Disconnect the breather pipe from the stub pipe.
2. Remove and discard the O-ring seal from the breather
pipe.
13. Disconnect the air flow meter multi-plug.
14. Cut and remove the strap which secures the vacuum pipe to
the induction elbow.
15. Disconnect the intake tube from the throttle body.
1. Remove the two bolts which secure the intake tube to the throttle body.
2. Disconnect the intake tube from the throttle body.

56. Disconnect the fuel feed and return hoses.
1. Disconnect the fuel hoses at the Quick Fit connectors,
using special tool 310 - 044 for the feed hose and
310 - 54 for the return hose.
Disconnect the return hose from the feed hose clip.
Fit blanking plugs to the pipes.

57. Disconnect the pipes from the purge valve.
1. Remove the clip which secu res the part load breather
hose to the purge valve.
2. Disconnect the part load breather hose.
3. Disconnect the vacuum hose from the purge valve and reposition the hose.

58. Disconnect the throttle cable.
1. Secure the cable abutment to the bracket with tape or a ratchet strap, if nece ssary (to save subsequent
adjustment procedure). Remove the bolts which
secure the abutment bracke t to the throttle body.
2. Rotate the butterfly actuator cam and disconnect the cable. Reposition the cable.
59. Disconnect the heater and brake servo hoses.
1. Disconnect the he ater return hose.
2. Release the heater feed hose locking lever and
disconnect the hose.

WARNING: B
EFORE PROCEEDING, IT IS ESSENTIAL THAT
THE WARNING NOTES GIVEN IN SECTION 100-00 (UNDER
THE HEADING 'SAFETY PRECAUTION S') ARE READ AND UNDERSTOOD.
3.
Connect the vacuum hose to the purge valve.

30

.
Connect the fuel feed and return hoses.
R
emove the blanking plugs
from the mating pipes.
1. Connect the hoses at the Quick Fit connectors.
F
it the return hose into the feed hose clip.

31
.
Connect the starter motor power cable.
1. Reposition and connect the power cable to the power stud. Fit the securing nut to the stud.
2. Reposition the protective boot over the starter motor power stud.
3. Connect the harness connector, engine management harness to starter motor. Fit the connector to the
mounting bracket.
R
enew the tie strap which secures the power cable to the
right hand enclosure.

32
.
Connect the generator suppressi on module (where fitted)
harness.
Re
position the harn
ess under the suppression module and
connect the harness connector.
33. Connect the hoses to the power steering pump.

to th
e throttle body.

51 . Co
nnect the intake tube to the throttle body.
1. Fit a new seal and connect the intake tube to the throttle body.
2. Fit the two bolts which secure the intake tube to the throttle body.

52 . Conne
ct the air cleaner cover.
F
it
the five clips which secu
re the air cleaner cover.

53 . Re
connect the breather pipe to the A-Bank camshaft cover.
1. Fit a new O-ring seal to the breather pipe.
2. Connect the breather pipe to the stub pipe.
54. Connect the air flow meter connector.
55. Fit a new Ty-strap to secures the vacuum pipe to the
induction elbow.
56. Refill the cooling system. Refer to Operation 26.10.01.
57. NOTE: When the engine is star ted from cold and run for a
short period only, before being swit ched off, a quantity of oil will

Engine Cooling - Cooling System Draining and Vacuum Filling
Gene
ral Procedures
WARNING: To avoid having scalding ho t coolant or steam blowing out of the cooling system, use extreme care when
removing the coolant pressure cap from a hot cooling system. Wait until the engine has cooled, then wrap a thick cloth
around the coolant pressure cap and turn it slowly until the pressure begins to release. Step ba ck while the pressure is
released from the system. When certain al l the pressure has been released (still with a cloth) turn and remove the coolant
pressure cap from the coolant expansion tank. Failure to fo llow these instructions may result in personal injury.
• CAUTIONS:
The engine cooling syst em must be maintained with the correct concentration and type of anti-freeze solution to
prevent corrosion and frost damage. Failure to follow th is instruction may result in damage to the vehicle.
Engine coolant will damage the paint finished surfaces. If spilt, immediately remove the coolant and clean the area
with water.
• NOTE: Vehicles fitted with supercharged engines shown, V8 NA engines similar.
All vehicles
1. Set
the heater controls to maximum HOT.

2. WARN
ING: Relieve the cooling system pressure by
unscrewing the coolant pressure cap. Failure to follow this
instruction may result in personal injury.
Remove the coolant expans ion tank pressure cap.
3. Raise a
nd support the vehicle.

4. NOTE : Remov
e and discard the
radiator drain plug seal.
Drain the coolant into a suitable container.
Remove the radiato
r drain plug.
5. CAUTION: Do not over tighten the drain plug. Failure to
follow this instruction may result in damage to the vehicle.
• NOTE: Install a new radiator drain plug seal.
Install the coolant drain plug.

R
emove the drain tray.
6. Lower the vehicle.

7. Inst
all the cooling system va
cuum refill adaptor to the
expansion tank.

8. Inst
all the vacuum filler gauge to the cooling system
vacuum refill adaptor.

9. Inst
all the venturi tube assembly to the vacuum filler gauge.

10. Connect a regulated compressed air supply to the venturi
tube assembly.

11. P
osition the evacuated air hose into a container.

12 . N
OTE: Make sure the coolant su
pply valve is in the closed
position on the vacuum filler gauge assembly.
• NOTE: The coolant vacuum fill t ool needs an air pressure of 6
to 8 bar (87 to 116 psi) to operate correctly.
• NOTE: Small diameter or long airlines may restrict airflow to
the coolant vacuum fill tool. Open the air supply valve.

13 .
NOTE
: Make sure the coolant supply hose is positioned
into a container of fifty perc ent mixture of Jaguar Premium
Cooling System Fluid or eq uivalent, meeting Jaguar
specification WSS M97B44-D an d fifty percent water. Make
sure no air can enter the coolant supply hose.
Open the coolant supply valve for 2 seconds to prime the
coolant supply hose.

14 . Apply air
pressure
progressively until the arrow on the
vacuum filler gauge reac hes the green segment.
15. Close the air supply valve.

Vehic
les with supercharger


16
.
Allow one minute to check the vacuum is held.
Di
sconnect the air supply.

17
.
NOTE: Close the coolant supply valve when the coolant
expansion tank MAX mark is reached or coolant movement has
ceased.
Open the coolant supply valve and allow the coolant to be
drawn into the system.
18. Remove the vacuum filler gaug e and cooling system vacuum
refill adaptor assembly.
19. Install the coolant expansion tank pressure cap.
20. NOTE: To ensure that air is not drawn into the system during
the following operations, do not remove the coolant expansion
tank pressure cap whilst the supe rcharger filler plug is open.
• NOTE: Place a suitable cloth ar ound supercharger fill port.
Top up the superc harger coolant.
1. Remove the filler plug an d discard the sealing washer.
2. Top up the coolant through the supercharger fill port.

Pa
rts List
The pressure regulator is a diap hragm-operated valve that regula tes fuel-rail pressure at 3,0 bar above the intake manifold
pressure. A pipe connects the throttle induction elbow to the pressure regulator to provide the vacuum control signal. On
supercharged engines, the pressure regulator vacuum feed is taken from the top of the supercharger outlet duct.
The regulator is fitted between the rear end of the right-hand fuel rail (bank 1) and the fuel return line to the tank.
Circuit Diagram, Fuel Injection Syst em - Normally Aspirated Vehicles

Ite
m
Par
t
Number
De
scr
iption
1—F
u
el Return
2—F
u
el Pressure Regulator
3—Inta
k
e Manifold Pressure