range rover p38 2.5 diesel

Hi, i have a 2.5 diesel and i have problem starting from cold,it takes atleast 1 to 2 minutes to start and them spites black smoke but clears and its ok .Anyone with any idea what the problem is.

Hi, what year is the range rover? It was also a problem with some bmw E39 525tds

Try filling the tank and seeing if it starts pretty much immediately.

It can be caused by a few things:
Glow plugs.
Duff Primer pump in the tank.
Bad seal in the tank.
Blocked gauze filter in the tank.
Leaking return diesel hoses.
Bad injection pump.

Hope any of this might help.
Illustrator