Our Garage has told us that its the injection pump!! Do you think thats right- ?its an expensive item !!

Thank you very much , but unfortunately the lift pump has been replaced - so you can understand why I'm so puzzled!!

Someone mentioned that it could be something to do with the valves- any ideas ?

Thank you for the ideas. however I've had a new lift pump fitted and new filters and it seems worse if anything !!

HELP!! My Disco is noew very sluggish up to 2000rpm then seems to judder and jump. if then I drop a gear it seems to go through that and revs smoothly up to 3000 rpm then won't rev past that.I would have said that it is fuel starvation but for the fact it revs so smoothlyfrom 2000 to 3000 revs...