Thanks again for everybody's help

Did not change woodruff key have run engine with no alternator belt and no bottom pulley. noise is still there! Just thinking about it I didn't change crank timing pulley as it didn't want to come off! Will find out more when front timing cover is removed! Fingers crossed I'll have time Wednesday!

Sounds like your problem could be pump timing. Do a search for uncle sams timing guide. It might help you!

You are a gent! Thanks for you help I'm thinking cam timing too!

3 bolts are defo tight. Adjusted timing at the pump about 10 times it's defently not pump timing, but the cam timing could be out. Will have to take front casings off to check! How do I check the vacume pump?

The brakes seem ok! Will strip it all down in the next few days and get back to you. Many thanks for your help.

If defo sounds like the noise is coming from cam area!

When I first did the belt it ran fine but smoked badly so I adjusted the pump a smidge and it was fine, no smoke and plenty of power. I haven't had the front cover off since doing belt. Are you thinking it might have jumped a tooth?

Hello all my first time in here so be gentle! Got myself a 95 300 tdi discovery. Just done head gasket and belts Inc tensioner etc. Been fine for 200 miles. Then the engine started to knock. I thought it was pump timing so I advanced and then retarded it but noise is still there. Thought could...