Thanks for the info guys, will source a new pump. In the mean time, will take the old one out and see why it has failed (120000kms)

Thanks Treworgey 90 Yes 300 TDi What is the likely cause? Servicable? Or replacement needed?

Unidentified 'tapping' noise from disco engine, originating from right side, rear end. Very noticable at tickover, appears to fade away at higher revs. Sounds like exhaust gasket leak, poorly adjusted tappet or broken belt slap but can't find source of noise. Engine is pulling fine. Lever on...