fuel JAGUAR X308 1998 2.G Owner's Manual

Thi
s sensor uses a piezo-electric sensing element to detect kn
ock which may occur under acceleration at critical conditions.
Should detonation be present the ECM will retard ignition timing of individual cylinders.
Exhaust G
as Recirculation
The EGR
valve (where fitted) reduces NOx
emissions by recirculating a portion of the exhaust gases back into the inlet
manifold.
Heated Oxyg
en Sensors
The h
eated oxygen sensors, one per bank, are situated upstream of the catalysts. Integral
to the sensors are heaters
(under ECM control) which allow the sensor s to reach their operating temperature as soon as possible after engine start. A
comparison between the level of oxygen in the exhaust gas to that in the atmosphere produces an output signal. This signal
is used by the engine closed loop fuel strategy to make fuelling corrections and so control overall emission levels.
Oxygen Sensors

Thes
e sensors, one per bank, are situated downstream of the
catalyst. The comparison of upstream and downstream signals
allows determination of cata lyst conversion efficiency.




Knock Sensor

Engi
ne -
Torqu
e Specifications


De
s
cription
Nmlb
-
ft
lb
-
in
A
ccessory
drive belt tensioner
43--
A
ccessory
drive belt idler pulley
61--
Air in
ta
ke tube to throttle body
5--
A/C
pipes t
o receiver / drier
9--
A/C pipe m

anifold joints
9--
Camsh

aft bearin
g caps10--
Ca
msh
aft cove
r10--
Ch
arge Air Co
oler Adaptor to cylinder head (SC)
21--
Co
olan
t outlet pipe (AJ26 NA)
10--
Cran
kshaft damper bolt - no lockin
g ring
St
ag
e 1
80--
Stag

e 2
80°--
C
r
ankshaft damper bolt - with locking ring
37
5--
Cra
nkshaft position sensor
10--
Cy
li
nder head bolts M10
35--
Cy
lin
der head bolts M8 (two at front of head)
25--
Driv
es
haft (propshaft) drive flan
ge bo
l
ts
82--
ERG p
i
pe to exhaust manifold
21--
Engi

ne compartment cover (bonnet) hinges
25--
En
gine
coolant radiator top securing panel
25--
E
ng
ine front mounting
70--
En
gine
oil cooler pipes (clamp)
21--
En
gi
ne / Transmission assembly rear mounting centre bolt
35--
En
gi
ne / Transmission assembly rear mounting outer bolts
25--
Ex
ha
ust downpipe support bracket to flywheel housing
50--
Ex
ha
ust downpipe to lower mounting bracket
48--
E
x
haust camshaft sprocket
St
age 120--
Stage 290 °--
Ex
haust manifold to cylinder head
18--
Ex
ha
ust manifold flange to downpipe
18--
E
x
haust Torca clamps
55--
Fuel cross-over elbo

w
10--
Fu
el f
eed pipe to intake manifold
10--
Fuel
Injector (AJ
26)
5--
Fuel
injector ha
rness clips to camshaft cover (SC)
5--
Fu
el p
ressure re
gu
l
ator to intake manifold
10--
F
u
el rail to Char
ge
A
ir Cooler Adaptor (SC)
21--
In
ta
ke manifold to cylinder heads
21--
Inta

ke elbow support brackets
18--
Oil f
i
lter
17--
Oil C
o
oler
7--
P
AS pu
mp hose unions
25--
P
r
imary timing chain fixed guide
12--
P
r
imary timing chain tensioner
12--
Pr

imary timing chain tensioner blade
14--
S
e
condary timing chain tensioner to cylinder
12--
S
t
eerin
g ra
ck45--
Thro
ttle body to intake elbow
21--
Th
ro
ttle cable abutment to throttle body
5--
Th
ro
ttle intake elbow to intake manifold
21--
Ti
mi
ng cover
12--
Variable camshaft t
i
ming oil control unit to intake camshaft
St
ag
e 1
20--
St
ag
e 2
90
°--
Var
iable camshaft timing oil control unit housing (bolt and nut)
21--
Va
ria
ble camshaft timi
ng oil control solenoid
12--
Wa
ter pump pulley
12--

E
ngine - Cylinder Head LH
In-ve
hicle Repair
Remova

l
CAU
TION: If a replacement cylinder head is to be installed to a
vehicle with variable camshaft timing (VCT) the cylinder head m ust have the
oil gallery blind rivet removed before installation.
Spe
cial Tool(s)

Cams

haft setting
303-530

Ti
ming chain tensioning
303-532

Wedges, prim
ary chain
303-533

Cr
ankshaft setting
303-531
1.
Open the engine compartment and install paintwork protection sheets.
2. Set the engine compartment cover to the service access position.

3.
Disconnect the battery ground cable.
Re

move the battery cover.
4. Remove the engine fron cover.For additional information, refer to: Engine
Front Cover (303-01 Engi
ne, In-vehicle Repair).
5. Remove the Inlet Manifold. Refer to Operation 30.15.01 in this Section. This operation includes depressurising the fuel system and removing the throttle
housing.
6. Disconnect the hoses and multi-plug from the coolant outlet pipe.
1. Release and reposition the hose clip, and disconnect the heater hose.
2. Disconnect the multi-plug from the temperature sensor.
3. Release and reposition the hose clip along the bypass hose.

E
ngine - Cylinder Head RH
In-ve
hicle Repair
Remova

l
CAU
TION: If a replacement cylinder head is to be installed to a
vehicle with variable camshaft timing (VCT) the cylinder head m ust have the
oil gallery blind rivet removed before installation.
Spe
cial Tool(s)

Cams

haft setting
303-530

Ti
ming chain tensioning
303-532

Wedges, prim
ary chain
303-533

Cr
ankshaft setting
303-531
1.
Open the engine compartment and install paintwork protection sheets.
2. Set the engine compartment cover to the service access position.

3.
Disconnect the battery ground cable.
Re

move the battery cover.
4. Remove the engine front cover.For additional information, refer to: Engine
Front Cover (303-01 Engi
ne, In-vehicle Repair).
5. Remove the Inlet Manifold. Refer to Operation 30.15.01 in this Section. This operation includes depressurising the fuel system and removing the throttle
housing.
6. Disconnect the hoses and multi-plug from the coolant outlet pipe.
1. Release and reposition the hose clip, and disconnect the heater hose.
2. Disconnect the multi-plug from the temperature sensor.
3. Release and reposition the hose clip along the bypass hose.

Engine - Intake Manifol
d
In-v
ehic
le Repair
Remov
a
l
W
A
RNING: BEFORE PROCEEDING, IT IS ESSENTIAL THAT
THE WARNINGS GIVEN IN SECTION 100-00 (UNDER THE
HEADING 'SAFETY PRECAUTIONS') ARE READ AND UNDERSTOOD.
S p
ecial Tool(s)

Qu
ic
k Fit Connector Release Tool
310-044

Qu ic
k Fit Connector Release Tool
310-054

Inject or Remov
al Tools
303-539

F u
el Injection Pressu
re Test Equipment
310-058
1. Open the engine compartment and fit paintwork protection
sheets.
2. Carefully remove the en gine covers, taking care not to damage
the plastic fixings or the rubber inserts.

3. Depress
urise the fuel system.
E
n
sure 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.
Pla c
e a closed container, su
itable for collecting fuel,
adjacent to the vehicle. Remove the lid.
4. Connect the fuel injection pres sure test equipment 310 - 058

(or other sui
table type). Insert the drain / bleed tube
into the fuel
container. Follow the manufa cturer's instructions and
depressurise the fuel system.
5. 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.

6. Di
sconnect the batt
ery ground cable.
R
emove the battery cover.

7. Disconnect the breather pipe fro m 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.
8. Disconnect the air fl ow meter multi-plug.
9. Cut and remove the strap which secures the vacuum pipe to
the induction elbow.

10
.
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.

20. Release the induction elbow su pport; working from the right
hand side.
1. Disconnect the vacuum pi pe from the centre of the
induction elbow.
2. Remove the upper bolt from the induction elbow support bracket.

21. Release the induction elbow su pport; working from the left
hand side.
1. Disconnect the vacuum pipe from the front of the
induction elbow.
2. Disconnect the engine breather T-piece from the induction elbow.
3. Remove the upper bolt from the induction elbow support bracket.
4. Loosen, but do not remove , the lower two bolts at the
induction elbow support bracket.

22. Disconnect the electrical conne ctor from each fuel injector.
23. Disconnect the fuel feed hose.
1. Disconnect the fuel f eed hose at the Quick Fit
connector, using special tool 310 - 044.

24. Disconnect the fuel return hose.
1. Disconnect the fuel retu rn hose at the Quick Fit
connector, using special tool 310 - 054.

25. Remove the inlet manifold.
1. Remove the ten bolts which secure the inlet manifold.

2. Remove the inlet manifold

26. Remove and discard the eight se als from the inlet manifold
ports.
27. Remove the fuel pressure regulator from the manifold.
1. Remove the two bolts which secure the pressure regulator.
2. Remove the pressure regulator.

3. Remove and discard the regulator O-ring seal.

28. Remove the fuel feed pipe from the manifold.
1. Remove the two bolts which secure the fuel feed pipe
to the inlet manifold.
2. Remove the fuel feed pipe.
3. Remove and discard the pipe O-ring seal.

29. Remove the fuel cross over elbow from the inlet manifold.
1. Remove the one bolt each side which secures the cross over elbow.
2. Remove the elbow from the manifold.
3. Remove and discard the O-ring seal.

30. Remove the fuel injectors.
1. Remove the securing scre ws from each fuel injector.
2. Remove the inject or clamping plates.
31. Remove the injectors from the ma nifold; use special tool 303
- 539 if necessary.

Installation


32. Remove and discard the sixt een sealing rings from the
injectors.

33. Remove the throttle induction elbow from the inlet manifold.
1. Remove the seven bolts which secure the throttle induction elbow.
2. Remove the elbow.
3. Remove the induction elbow seal from the manifold.
1. Clean all parts and relevant mating faces.

2. Fit the fuel pressure regulator to the manifold.
1. Lubricate and fit a new O-ri ng seal to the regulator.
2. Fit the pressure regulator to the manifold.
3. Fit the two bolts which secu re the pressure regulator.
3. Fit the fuel feed pipe to the manifold.
1. Lubricate and fit a new O-ri ng seal to the feed pipe.