2000 JAGUAR XK8 AJ-V8 4.0L (AJ26) (X100)
X100 / 2-door coupe / 2-door convertible / Global (primarily Europe, North America, and Australia)
AJ-V8 4.0L (AJ26)Exact year/trim recordSilver
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- Early V8 head gasket issues in some areas
- Dashboard instrument cluster failures
- Suspension bushings wear
First checks
- Inspect coolant system for leaks and overheating signs
- Check for engine oil leaks around timing covers
- Verify smooth automatic transmission shifts
Before replacing parts
- Save fault codes and freeze-frame data before clearing anything.
- Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
- Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.
Important notes
- The 2000 model year XK8 launched the new AJ26 4.0L V8 engine with improvements over the 1997–1999 4.0L.
- Market variations exist mainly in emissions equipment and power ratings; all share the AJ26 engine family.
- Oil capacity includes oil filter change, recommended service-fill volume.