The early 1980s Jaguar V12 engines are known for their overheating issues. This is often due to inadequate cooling systems, such as marginal radiator capacity and inefficient fans.

The carbureted versions of the early Jaguar V12s can experience problems with the fuel delivery system, leading to performance issues and starting problems.

The wiring and electrical components in older Jaguars, including those from 1982, can become problematic over time, leading to issues such as faulty ignition systems and charging problems.

The V12 engine has a complex vacuum system that can develop leaks, causing rough idling and poor engine performance.

The V12 engines from this era can suffer from timing chain wear or failure, which can lead to severe engine damage if not addressed.

Older Jaguar V12 engines are prone to oil leaks, particularly from valve cover gaskets and other seals, which can lead to low oil levels and engine damage if not managed.

The 1982 Jaguar XJ6 with an in-line 6-cylinder engine often experiences oil leaks, especially from the valve cover gasket and the rear main seal.

These engines are prone to overheating due to issues with the cooling system, such as a failing thermostat, clogged radiator, or faulty water pump.

The fuel injectors can become clogged or fail, causing poor engine performance and fuel economy.

Problems with the ignition system, including the distributor, ignition coil, and spark plugs, can lead to misfires and poor starting.

Vacuum hoses can degrade over time, leading to vacuum leaks that affect engine performance and idle quality.

The timing chain can stretch or wear out, causing issues with engine timing and potentially leading to severe engine damage if not addressed.

The electrical system, including various sensors and wiring, can be unreliable, causing intermittent engine performance issues.

The head gasket can fail, leading to coolant and oil mixing, overheating, and loss of compression.