Please help.
I currently drive a 2004 Disco TD5 but just recently got a Disco 1999 TD5 which had distroyed its engine due to diesel leaking from the head.
I have put in a reclaimed defender TD5 10P engine with 33000 miles from a reliable source.
When fitted the engine ran perfectly, very quiet and smooth, however, now when running after only two hours it sounds like an old ford cortina camshaft.
The replacement engine has been sat around for quite sometime awaiting clearance from insurance company.
The clatter rises with the engine revs, it definately is the engine and not ancillary items.
There is no loss of power and the engine still runs smooth.
There is no diesel in the sump.
The exhaust manifold is not leaking.
I have programmed in the different injector codes.
I have removed the auxillary belt and it is still there.
We have changed the dual mass flywheel and clutch, set up the injector clearances.
I have a Hawkeye, and all the cylinders seem balanced.

I would be very greatfull if anyone could suggest what my next move should be.​