I can't offer any advice I'm afraid, but a Compression Ignition engine can not have a misfire as such so in all likelihood it could be either an injection or compression problem .
You need a good independent Land Rover specialist not a Main Dealer/Stealer...rudseyrover said:I wondered if it was the primary fuel pump too.
I have checked the fuel pump accessed from the panel beneath the fuel tank. It was a bit muddy in there, I checked the multi plug was secure and a good contact.
I have a list of problems building up so I feel its time to get it into the dealer, the lower ball joints sound knackered, the rear wiper motor is out of action, rear parking sensors playing up and its over due a gear box oil change,coolant and brake fluid change too.