manifold JAGUAR X308 1998 2.G Repair Manual

Engine - Intake Manifold Gasket RH
In-vehicle Repair
1. Open the engine compartment and fit paintwork protection
sheets.

2. Disconnect the batt ery ground cable.
Remove the battery cover.

3. WARNING: BEFORE PROCEEDING, IT IS ESSENTIAL THAT THE WARNINGS GIVEN IN SECTION 100-00 (UNDER THE
HEADING 'SAFETY PRECAUTIONS') ARE READ AND
UNDERSTOOD.
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.

4. Connect the fuel injection pres sure 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.
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. Drain the radiator coolant. Refer to Operation 26.10.01.
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.

Engine - Valve Springs LH
In-vehicle Repair
Removal
Special Tool(s)

Valve spring compressor
303-252 1. Open the engine compartment and fit paintwork protection
sheets.
2. Set the engine compartment cover to the service access
position.

3. Disconnect the batt ery ground cable.
Remove the battery cover.
4. Remove the Timing Co ver. Refer to Operation 12.65.01 in this
Section. This operation includes draining the coolant from the
radiator and removing the cam covers.
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. Remove the Cylinder Head an d Gasket. Refer to Operation
12.29.02 in this Section.

7. Remove the valve collets from the first valve.
1. Fit the valve spring compressor 303 - 252 to the relevant spring.
2. Compress the spring and remove the collets.
8. Remove the valve spring.
Remove the valve spring compressor 303 - 252.
1. Remove the valve collar.
2. Remove the valve spring.

Installation

9. Repeat the instructions for each valve spring to be removed.
10. Clean all relevant components.

1. Fit the valve spring.
1. Fit the valve spring.
2. Locate the valve collar onto the spring.

2. Refit the valve collets to the first valve.
1. Fit the valve spring compressor 303 - 252 to the relevant spring.
2. Compress the spring and fit the collets.
Remove the valve spring compressor and check that the
collets are correctly seated.
3. Repeat the instructions for each valve spring to be fitted.
4. Refit the Cylinder Head and Gasket. Refer to Operation
12.29.03 in this Section.
5. Refit the Inlet Manifold. Refer to Operation 30.15.01 in this
Section. This operation includes refitting the throttle housing.
6. Refit the Timing Cover. Refer to Operation 12.65.01 in this
Section. This operation includes refitting the cam covers and
refilling the coolant system.
7. Move the engine compartment co ver from the service position
and connect the gas struts.
8. Remove the paint protection sheets and close the cover.
9. Connect the battery and fit the battery cover.
Refer to the Battery Reconnection Procedure 86.15.15.

Engine - Valve Springs RH
In-vehicle Repair
Removal
Special Tool(s)

Valve spring compressor
303-252 1. Open the engine compartment and fit paintwork protection
sheets.
2. Set the engine compartment cover to the service access
position.

3. Disconnect the batt ery ground cable.
Remove the battery cover.
4. Remove the Timing Co ver. Refer to Operation 12.65.01 in this
Section. This operation includes draining the coolant from the
radiator and removing the cam covers.
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. Remove the Cylinder Head an d Gasket. Refer to Operation
12.29.03 in this Section.

7. Remove the valve collets from the first valve.
1. Fit the valve spring compressor 303 - 252 to the relevant spring.
2. Compress the spring and remove the collets.
8. Remove the valve spring.
Remove the valve spring compressor 303 - 252.
1. Remove the valve collar.
2. Remove the valve spring.

Installation

9. Repeat the instructions for each valve spring to be removed.
10. Clean all relevant components.

1. Fit the valve spring.
1. Fit the valve spring.
2. Locate the valve collar onto the spring.

2. Refit the valve collets to the first valve.
1. Fit the valve spring compressor 303 - 252 to the relevant spring.
2. Compress the spring and fit the collets.
Remove the valve spring compressor and check that the
collets are correctly seated.
3. Repeat the instructions for each valve spring to be fitted.
4. Refit the Cylinder Head and Gasket. Refer to Operation
12.29.03 in this Section.
5. Refit the Inlet Manifold. Refer to Operation 30.15.01 in this
Section. This operation includes refitting the throttle housing.
6. Refit the Timing Cover. Refer to Operation 12.65.01 in this
Section. This operation includes refitting the cam covers and
refilling the coolant system.
7. Move the engine compartment co ver from the service position
and connect the gas struts.
8. Remove the paint protection sheets and close the cover.
9. Connect the battery and fit the battery cover.
Refer to the Battery Reconnection Procedure 86.15.15.

36. Disconnect the engine oi l pressure transmitter.
37. Remove the filler cap from the power steering reservoir.

38. Disconnect the hoses from the power steering pump.
Position a drain tray under the pump.
1. Release the high pressure hose union nut and drain the fluid.
2. Discard the O-ring seal an d fit blanking plugs to the
pipe and union.
3. Release the feed hose from the pump and fit blanking
plugs to the pipe and union.
Discard the fluid.

39. Release the Oxygen sensor multi-plugs from the mounting
bracket and disconnect the plugs.
40. Remove the four nuts, each side, which secure the downpipe
catalytic converters to the exhaust manifold.

Repeat
the above procedure for the other side.

16 . Connect
the driveshaft (propshaft
) flange to the transmission
output flange.
F i
t the three bolts which secure the flange.

17 . F
it the downpipe catalytic converters.
1. Fit a new gasket to the downpipe flange and fit the
downpipe assembly. to the manifold.
F i
t the bolts which secure
the downpipe to the lower
mounting bracket.
Repeat the above operation
s
for the other downpipe
catalytic converter.

18 . F
rom above the vehicle, tighte
n the manifold flange nuts, A-
Bank and B-Bank flanges, to the correct torque.
19. Fit the front muffler assembly.
Locate the front muf fler into the
downpipe catalytic
converters.
20. Move the front muffler forwar d to allow the intermediate
mufflers to be connected.

Fuel Ch
arging and Controls -
Torque Specific
ations


Com

ponent
Nm
Fue

l injector cl
amp plate bolts
4-
6
Inta

ke manifold fuel feed pipe to fuel rail bolts
8-
12
Inta

ke manifold fuel cross-over pipe to fuel rail bolts
8-
12
F

uel pressure regulator /
return pipe to fuel rail / intake manifold bolts
8-
12
Harness to

camshaft cover nuts
4-
5
F

uel pressure regulator / return
pipe to fuel rail bolts (SC)
8-
12
F

uel rail to charge air cooler adaptor bolts (SC)
18
-24
F

uel rail to fuel cross-over pipe bolt (SC)
8-
12
F

uel feed pipe to fuel rail bolts (SC)
8-
12

Fuel Char
ging and Controls - Fuel Charging and Controls
Description an
d Operation

This section provides service informatio n for the fuel distribution components located on the engine and includes the
supercharger, where fitted. Refer to Section 310-01 for informatio n on the fuel tank, fuel lines and related fuel supply items.

Fuel Charging and Controls -
Normally Aspirated Vehicles

P
a
rts List
It
e
m
Par
t
Number
De
scr
iption
1—F
u
el feed from tank to bank 2
2—Fue
l
injector
3—Inta
k
e manifold/fuel rail
4—Te
st
/de-pressurization valve
5—F
u
el cross-over pipe
6—F
u
el pressure regulator
7—F
u
el return to tank

Fuel D
istribution
Fuel is supplied to th
e engine
via eight fuel injectors (one pe r cylinder). The injectors are located in two fuel rails which r un
the length of each cylinder bank and ar e integral with the air intake manifold.
Fuel pumped from the tank enters a feed pipe at the rear of bank 2. Fuel flow is along bank 2 fuel rail, across the top front
of the engine (cross-over pipe) and through bank 1 fuel rail, the unused fuel re turning to the tank via a pressure regulator.
The fuel injectors are each controlled electrically from the engine control module (ECM).
A test valve is fitted to the cross-over pipe connecting the fu el rails at the front of the intake manifold. This valve allows the
fuel system to be depr essurized during servicin g and troubleshooting.
Fuel Injector

Eight, side-fed, dual straight-jet fuel injectors are fi tted in the fuel rails.
The injector consists of a solenoid, core, needle valve and ho using. When a control signal from the ECM is applied to the
solenoid coil, the needle valve lifts up and fuel is injected under pressure into the intake port. The fuel sprays from the
injectors are directed onto the back of the intake valves.
The injection quantity is determined by the length of time that the ECM signal is applied to the solenoid coil.
The injectors installed in the fuel rails of supercharged engines are of a higher flow rating than those installed in normally
aspirated engines and are secured in position by spring clips. Seals are instal led between the injector mounts of the fuel
rails and the related re cesses in the charge air cooler adaptors.
Pressure Regulator