Hi there, Thanks for the reply and the info on the lift pump. I think you're right it must be the filter - I haven't touched anything else. I've bought a new one, fitted it and bled the system....all seems fine two hours after fitting... I really need to wait until the morning to see if it...

Hi All, hope someone can help. A few days ago I serviced my Disco 1 300tdi i.e. since changing the fuel filter the system seems to be getting air in somewhere and is a nightmare to start. I have bled the filter i.e. lossened the bleed screw and pumped the lift pump until clear fuel and no air...