~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 

Be aware that the early Jaguar V8 engines used plastic-bodied
   timing chain tensioners that are prone to premature failure.  When a

tensioner fails, its chain jams and breaks which disrupts the valve timing

relative to piston travel. Pistons and valves collide and the result is not pretty,

as illustrated in second photo. This engine is ruined.

Depending on the engine speed when this occurs, it may only bend valves

but this still requires removal of the cylinder heads to repair.

Aluminum-bodied tensioners were introduced late in 2001

and should be retrofitted to all earlier cars to avoid costly damage.