My Disco TD5 2001 has a rough misfire at the rpm range of 1650-1850. This only occurs at morning start up and dissapears at about 2100-2300 rpm. Seem to disappear once the motor is hot. The power also seems down, this is especially noticeable on hills and even when kicking down (auto gearbox) there is no bite from the motor and it just seems flat? I would appreciate any help on resolving this issue.

 

Wish there were more diesel owners here in the States.