Two problems related to timing tensioner have been reported for the 1999 Jaguar XK8. The most recently reported issues are listed below.
Secondary timing chain tensioner failure @44k miles.
After starting the engine, it began to make noise and had a rough idle. The restricted performance message flashed and then the engine died. The timing chain tensioner failed and jumped mechanical timing, which seems to be a very common problem. This could have caused an accident because all power steering and brakes were lost while driving the vehicle through a busy intersection. If you read on any Jaguar forum, this is a problem that is common with the Jaguar 4. 0 v8 from 1998 through 2000.
| Timing Tensioner problems | |
| Engine problems | |
| Car Stall problems | |
| Engine Cooling System problems |