1994 Land Rover Discovery 1 misfiring. No blue smoke at all, checked turbo, it's fine. Is it the HT leads?

SOURCE: land rover discovery 1 2.5 tdi

i experienced something very similar, we checked everything and found 2 issues . 1 ; on chassis in front of diesel tank is a sediment filter, ours was full of jelly and silt. and also on top of diesel tank through trunk outlet and return diesel pipes partly corroded and pulling air in. swapped sender and cleared silt pot and amazed by the power difference too. hope this helps ,Reuben

SOURCE: Starts fine when cold, after running dies on idle then wont start

Sounds like the fuel filter is dirty and needing to be changed. It's cheap and easy to swap out.

SOURCE: 1999 land rover disco trouble starting, misfiring

Is it a Discovery I or II?

SOURCE: 99 land rover discovery 2 power loss, then stalls

Change the Mass Air Sensor it is dirty should solve all your trouble

SOURCE: default code P1451 Land Rover Discovery II

The code P1451 on a Land Rover is "Leakage Detection Module Motor power stage error Drive cycle A:Signal out of range - above maximum". This is an OBD-II diagnostic system code. As far as I know, a 1995 Land Rover Discovery does not use a OBD-II system. Is it possible that this rover is a later model year