Engine Noise While Idling or After Cold Start on Jaguar XJ8

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: 85,341 (35,100–133,000)
Engine affected: 3.6L 6 Cylinder
4 model years affected: 1998, 1999, 2000, 2001
21 people reported this problem
Viewing 1 - 10 of 10 comments
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!!
Filled car to the maxium with suspreme gas. This has happened two times on two different motors. Drove about 1 mile,parked car went into grocery store came out tried to start car and only the starter turned over went into home came out, in few minutes car wouldn't start only starter turned over. Both times to the same shop to diagonsis it no compression on both sides. Had it towed about 100 miles to Jaguar dealer,they said I needed a motor and I told them I had only 47,000 miles on it, the timing chain are known to break, only thing they said another motor because mine might be bad on the inside. Now parked at foriegn car garage next month will be 1year says the same thing, I need a motor. Jaguar dealer charged $3,500 and I paid $2,700 for motot, garage want $2,000 for motor and $3,000 to install.I've had the car for 3 years and haven't drove it for a complete year and still paying for it and have tags and insurance.
plastic tensioners failed chain broke engine stopped
repair shop was able to get all chain parts out and replace
installed new tensioners no other damage to motor
Both of my top tensioners went the top fell off one of them and went through the timing chain which jumped the timing by a tooth. Luckily, no valve to piston damage! Now I need to figure out the easiest way to change the now streched timing chain. Looks like I need a whole bunch of special tools.
Local dealership suggested -- gien age of vehicle -- replacement as 'preventive maintenance' with estimated overall cost of $1350.00
Dealer told me time chain was broken when I took it in for tire service engine light. The car was driving fine except for service light.