Just to update you guys on the Td4 -I changed the big ends as some were worn but still had a knock so decided to take the head off and what a pig of a job that turned out to be .
As said here they certainly set out to make life as difficult as possible for guys doing their own repairs . I have managed to build up a good kit of tools over the years but still ran into problem after problem and it took me 2 evenings to just get the head off as I had to come up with ideas to get around using special tools.
And to make matters worse the Haynes manual forgot to mention that there are 5 ( not 4 ) allen headed screws attaching the head to the timing cover - one of them hidden under a chain guide . This held me up for ages as the head wouldn't(couldn't) come off .I thought it was stuck on a dowel and the result was that I cracked the timing cover .
The end result is the engine is to be scrapped - as Clutchdust said early on no 1 cylinder is badly scored , some of the cam rollers are rough and both camshafts are looking the worse for wear.
I rang an engine reconditioner about doing it up and his reply was " you could spend a few grand on it " so the search is on for a SH engine - and I am not looking forward to fitting it .The engine and box have to come out as a unit and this means removing driveshafts (which can be very reluctant to pop out) , loosening ball joints and a whole list of other bits .
If I can get this one back on the road I will never go near one again.