On this V8 engine, timing chain problems are very common. Because the timing chain tensioners were made from plastic, they can fail prematurely and cause serious engine damage. A noticeable engine noise while idling or during a cold start can indicate a timing chain tensioner problem. The engine noise may also be accompanied by a rough or uneven engine idle. Improved components are available to remedy this problem.
Car Problem Reports
Jaguar XJ8 Plastic Timing Chain Tensioners May Fail and Cause Engine Damage
Jaguar XJ8 Problem
Engine Affected: 3.6L 6 Cylinder
Average Mileage: 84,525 mi (35,100 mi - 124,000 mi)
engine noise sounds like heavy metalic rapping, sounding like main bearing failure
Visitor, 1998 Jaguar XJ8, 97,000 mi
Need first starting the car .......a tiking noise but stop after you rise the motor. No engine lights or anything gave me no warrants. Now my car will not start mechanic says it the timing chain bent and it damaged the motor. Somebody please help don't have much money work for the Government which was shut down. Helpppppp!!
Visitor, 1998 Jaguar XJ8, 3.6L 6 Cylinder, 82,000 mi
Visitor, 2000 Jaguar XJ8, 3.6L 6 Cylinder, 35,100 mi
Local dealership suggested -- gien age of vehicle -- replacement as 'preventive maintenance' with estimated overall cost of $1350.00