Hello,
I just wanted some advise before i sell my beloved jag for spares.When i run the car when it reaches the usual temperature i can hear a knocking sound from the engine.It doesn't do it when i accelerate.
Any ideas what it could be?

 

If that was mine I would get a long screwdriver to use as a stethoscope. Put the tip to any part of the engine and put your ear to the handle. You should be able to narrow it down. I am thinking it sounds like the alternator pulley.

Roger