Hi everyone, I've just purchased a 54 x type diesel sport. Lovely car but feels hesitant, slight miss when cruising at 2000rpm. If I put foot down it takes off no problem but there is a cloud of black smoke !! When I pull up after a drive the car is fine for about 10 seconds then the idle goes lumpy as if its going to stall then picks itself back up a again rev counter goes from 900 down to about 750 then back up.... It does this every few seconds....... Any ideas ???? I'm gonna take off egr valve the weekend and Clean and then blank it off, clean Maf sensor... Anything else ?? Cheers.