fuel pressure JAGUAR XFR 2010 1.G Owner's Manual

23.
24.
25. Loosen the Torx screws half a turn each.




































CAUTIONS:


Install new high-pressure fuel supply lines.


Lubricate only the union threads with clean engine oil.

NOTES:


Remove and discard the blanking caps.


Install the bolt and unions fully finger tight before final tightening.

26.
















27.
28. CAUTION: Care must be taken when positioning the fuel rail
high-pressure fuel pump cover to one side.


NOTE: Fuel rail high-pressure fuel pump cover shown removed for
clarity.

Torque: 11 Nm










CAUTION: Care must be taken when positioning the fuel rail
high-pressure fuel pump cover to one side.


NOTE: Fuel rail high-pressure fuel pump cover shown removed for
clarity.

Torque: 11 Nm








NOTES:


Do not tighten at this stage.


Remove and discard the blanking caps.

37.
38.
39.
40.


















Torque:
Unions 21 Nm

















NOTE: The high-pressure fuel pumps are removed from the illustration
for clarity.

6. NOTE: Tsubaki timing drive only.
Install the lower timing chain making sure the coloured
chain links align correctly with the fuel rail high-pressure
fuel pumps camshaft and crankshaft sprocket markings.

7. CAUTION: Make sure that the tensioner spring is
correctly located.


NOTE: Tsubaki timing drive only.
Torque: 21 Nm









8. NOTE: INA timing drive only.
Install the lower timing chain making sure the coloured
chain links align correctly with the fuel rail high-pressure
fuel pumps camshaft and crankshaft sprocket markings.

Fuel Charging and Controls - V8 S/C 5.0L Petrol -
WARNINGS: Published: 11-May-2011

Do not smoke or carry lighted tobacco or open flame of any type when working on or near any fuel related components.
Highly flammable vapors are always present and may ignite. Failure to follow these instructions may result in personal injury.


Before any work is carried out on the fuel system, ground the vehicle to earth and maintain the ground connection until
the work is complete.


CAUTION: Before disconnecting or removing components, make sure the area around the joint faces and connections are
clean. Plug open connections to prevent contamination.


NOTE: Tighten the fuel rail high pressure fuel pump fuel line unions and fuel rail crossover pipe unions as it is instructed
in service manual.

Description Nm lb-ft lb-in Ignition coil-on-plugs retaining bolts 7 - 62 Spark plugs 20 15 - Fuel rail retaining bolt Stage 1 - 20 Stage 2 - 30 Stage 1 - 15 Stage 2 - 22 - Fuel rail crossover pipe unions 21 15 - Fuel rail crossover pipe retaining bolts 12 9 - Fuel pressure regulator 33 24 - Fuel rail high pressure fuel pump fuel line unions 21 15 - Fuel rail high pressure fuel pump fuel line M8 bolt 25 18 - Fuel rail high pressure fuel pump fuel line M6 bolt 11 8 - Fuel rail high pressure fuel pump fuel line M5 nut 6 - 53 Fuel rail high pressure fuel pump fuel line shield M10 bolt 29 21 - Fuel rail high-pressure fuel pump fuel line shield M6 bolt 11 8 - Fuel rail high pressure fuel pump torx bolts 12 9 - Throttle body retaining bolts 10 7 - Accessory drive belt idler pulley retaining bolts 25 18 - Steering gear retaining bolts 100 74 - Steering column lower universal joint assembly bolts 35 26 - Coolant expansion tank retaining bolt 10 7 - Engine compartment brace retaining bolts 45 33 - www.JagDocs.com

Published: 11-May-2011
Fuel Charging and Controls - V8 S/C 5.0L Petrol - Fuel Charging and Controls
- Component Location
Description and Operation
COMPONENT LOCATION










































Item Description 1 Crossover tube 2 LH (left hand) fuel rail 3 Fuel injector (8 off) 4 HP (high pressure) fuel lines 5 HP fuel pumps and covers 6 RH (right hand) fuel rail 7 FRP (fuel rail pressure) sensor 8 LP (low pressure) fuel lines

to deliver the correct mass of fuel to the combustion chambers.



LOW AND HIGH PRESSURE FUEL LINES Component Description



Item Description A LP fuel lines B HP fuel lines 1 Acoustic cover 2 Heat reflective and insulation sleeves The LP fuel line connects the HP fuel pumps to the fuel delivery line from the fuel tank and lines system. A quick release
connector at the start of the LP fuel line is held in a clip integrated into the LH (left-hand) ignition coils cover. P-clips secure
the LP fuel line to the rear of each cylinder head and to the RH (right-hand) side of the cylinder block. A heat reflective and
insulation sleeves are installed on the LP fuel line where it runs behind the RH exhaust manifold.
The HP fuel lines connect the HP fuel pumps to the RH fuel rail and the crossover tube. Two P-clips and a pipe clamp attach the HP fuel lines to the cylinder block and the RH cylinder head respectively. An integral bracket on the front HP fuel line is attached to a stud on the front-upper RH timing cover. An acoustic cover is installed on the bottom of the front HP fuel line.

1 Crankshaft 2 Auxiliary drive chain 3 Auxiliary camshaft 4 Tappet 5 HP fuel pump 6 Acoustic cover The two HP fuel pumps are identical mechanically-driven pumps installed on the RH side of the sump body, behind the generator. An O-ring seals each of the HP fuel pumps in the sump body. The rear HP fuel pump is identified as No. 1 pump; the
front HP fuel pump is identified as No. 2 pump. An acoustic cover is installed on each of the HP fuel pumps.

The HP fuel pumps are single-plunger pumps. The plunger of each pump extends through the sump body and the carrier of the
auxiliary camshaft. A tappet on the end each plunger is operated by a two-lobe cam on the auxiliary camshaft. A spring
installed on the outside of the plunger ensures the plunger and tappet remain in contact with the cam.

The auxiliary camshaft is driven by the crankshaft, via the auxiliary drive chain, at engine speed. The auxiliary camshaft is
timed to match the pump delivery strokes with crankshaft position. HIGH PRESSURE FUEL PUMPS
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1 PRV (pressure relief valve) 2 To HP fuel lines 3 Check valve 4 Plunger 5 From LP fuel lines 6 Damper chamber 7 Fuel metering valve In addition to the plunger, each HP fuel pump contains:

A damper chamber.
A fuel metering valve.
A check valve.
A PRV.

The damper absorbs pressure pulses from the plunger when the fuel metering valve is open at the start of the delivery stroke.

The fuel metering valve regulates the output pressure from the HP fuel pump. The fuel metering valve is a normally open
solenoid valve controlled by the ECM. During the inlet stroke of the plunger the fuel metering valve is de-energized, which allows LP fuel into the pumping chamber. The ECM energizes the fuel metering valve closed during the delivery stroke of the plunger, which forces the fuel in the pumping chamber through the check valve into the HP lines. By changing the closing point
of the fuel metering valve, the ECM can determine the volume of fuel output during the delivery stroke, and thus the pressure in the HP side of the system.
The check valve prevents the return of HP fuel to the pumping chamber during the inlet stroke of the plunger.

The PRV protects the HP side of the system from excessive pressure if there is a failure of the fuel metering valve. If the pump
delivery pressure increases to 195 - 204 bar (2828 - 2959 lbf/in2
), the PRV opens and returns fuel to the inlet side of the
plunger.