Description
Factory Jaguar XJ6 Workshop Manual (1979–1986)
This factory-level repair manual delivers complete service and overhaul data for the Jaguar XJ6 Series III, covering every model sold in North America and worldwide between 1979 and 1986. From routine maintenance to full drivetrain rebuilds, all procedures are drawn directly from Jaguar’s engineering documentation.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | 3.4L XK6 twin-cam inline-six, 4.2L XK6 twin-cam inline-six |
| Diesel | N/A |
| Transmissions | Borg-Warner Model 66 3-speed automatic, Getrag 5-speed manual |
| Drive | RWD |
| Model Years | 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986 |
| Badge Twins | Jaguar XJ 3.4, Jaguar XJ 4.2, Daimler Sovereign Series III, Vanden Plas |
Common XJ6 Repairs Covered
| System | Procedures |
|---|---|
| Lucas D-Jetronic Fuel Injection | Cold-start injector diagnosis, fuel pressure testing, throttle body cleaning, injector replacement |
| Cooling System | Thermostat replacement, radiator removal, water pump overhaul — XK engines are prone to overheating when coolant maintenance is neglected |
| Electrical / Lucas Wiring | Circuit tracing, connector repair, central locking and power window fault diagnosis using full color-coded wiring diagrams |
| Suspension & Steering | Front wishbone bushing replacement, rear independent suspension subframe inspection, power steering rack overhaul |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Why does my XJ6 Series III run rough when cold — is that covered?
Yes. The manual includes detailed diagnostic procedures for the Lucas fuel injection system, including the cold-start injector, auxiliary air valve, and coolant temperature sensor. These are known weak points on the 3.4L and 4.2L XK engines, and the manual walks through systematic fault-finding with specifications for each component.
Does this manual also apply to the Daimler Sovereign and Vanden Plas variants?
It does. The Daimler Sovereign Series III and Vanden Plas editions share the same XJ platform, bodyshell, and drivetrain as the XJ6. All mechanical, electrical, and body procedures in this manual apply equally to those badge-twin models sold during the 1979–1986 production run.
Are complete wiring diagrams included for the electrical system?
Full wiring diagrams are included, covering ignition, Lucas fuel injection circuits, lighting, climate control, instrument cluster, power windows, and central locking. Each diagram identifies wire colors and connector locations, which is especially useful when diagnosing the complex British electrical systems typical of this era.
What format is the manual?
The manual is a PDF file delivered immediately after purchase. It is fully searchable, compatible with Windows, Mac, iOS, Android, and any device with a PDF reader, and individual pages can be printed for use in the workshop.
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