hi ive just bought a disco its a 2.5diesel auto it a 98 r reg es model engines fine gearbox ect fine the problem is its been of the road for about a year all was well b4 it went off the road it wasnt garaged i put new battery in it fired up no probs the problem my brake pedal hits the floor when you brake when engines running you have to pump it to stop and thats not 2 good the servo seems fine has any 1 any tip 4 me plz help