TD% smoking and running rough on start

Hi everyone

New to the forum so hope this is in the right place.

My 2000 TD5 Discovery has a problem with running rough when it is cold. When it cuts in and out of rough running (which it does in between running fine) it smokes like an old train with unburnt fuel.

The colder it is the worse it gets.

Glow plugs, injectors, brass seals all replaced but still no luck.

Any suggestions would be very much appreciated.

thanks

David

Have a look for oil contamination in the injector wiring loom.