Jaguar XJ (X350). Manual — part 653

5 . Remove and discard the gasket.

6 . NOTE:

Cap the coolant hoses to minimize coolant loss.

Remove the throttle body.

Detach the coolant hoses from the throttle body.

Installation

1

.

CAUTION: Do not attempt to clean the throttle body. The bore and the throttle

plate has a special coating applied during manufacture which should not be removed.

To install, reverse the removal procedure.

Install the new throttle body gasket.

Tighten to 10 Nm.

2 . Check and top up the cooling system.

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303-04C : Fuel Charging and Controls – 2.7L Diesel

Specifications

Specifications

Torque Specifications

Description

Nm lb-ft lb-in

High-pressure fuel supply line unions

A –

–

High-pressure fuel supply line support bracket retaining nut 10 –

89

Fuel injector retaining bolts

10 –

89

Fuel injector high pressure fuel inlet adaptor union

42 31 –

Fuel injection diverter rail retaining bolts

23 16 –

Fuel injection supply manifold retaining bolts

23 16 –

Fuel injection supply manifold support bracket retaining bolts 23 16 –

Fuel pump retaining bolts

23 16 –

Fuel injection pump belt rear cover retaining bolts

7

–

62

Camshaft rear pulley retaining bolt

A –

–

Fuel injection pump belt tensioner retaining bolt

25 18 –

Fuel injection pump pulley retaining nut

50 37 –

Fuel injection pump high pressure fuel outlet adaptor union 37 27 –

Exhaust gas recirculation (EGR) valve retaining bolts

10 –

89

Intake manifold retaining nuts

15 11 –

A = refer to the procedure for the correct torque sequence

General procedures

Fuel Injection Component Cleaning

WARNING: Do not carry out any repairs to the fuel system with the engine

running. The fuel pressure within the system can be as high as 2000 bar. Failure to
follow this instruction may result in personal injury.

WARNING: 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.

WARNING: If fuel contacts the eyes, flush the eyes with cold water or eyewash

solution and seek immediate medical attention.

WARNING: Place the vehicle in a well ventilated, quarantined area and arrange '

No Smoking/Petrol Fumes' signs about the vehicle.

WARNING: Wait at least 30 seconds after the engine stops before commencing

any repair to the high-pressure fuel injection system. Failure to follow this instruction
may result in personal injury.

WARNING: Wash hands thoroughly after fuel handling, as prolonged contact

may cause irritation. Should irritation develop, seek medical attention.

WARNING: Do not carry or operate cellular phones 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.

CAUTION: Before using the cleaning fluid, protect all electrical components and

connectors with lint-free non-flocking material.

CAUTION: Make sure that all parts removed from the vehicle are placed on the

lint-free non-flocking material.

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