Help needed poorly diesel x5

[powers1]

Originally Posted by Gregory891

Black smoke under what conditions; engine warmed up, cold, intermediate? Does this happen only at idle? Do you wait until the DDE light goes off and then start the car? Where is the smoke (rear of vehicle or towards left front door sill?

What maintenance has been done recently? What year X5 do you have? Mileage of car? Age of air filter, oil filter, last oil service? Do you indeed have LL04 rated oil in the sump? Has your breather (loo roll) been serviced or (better) converted to the vortex type?
Do you know what fault codes your car presently has logged?

Think we are worrying more about it than the OP!
Seems that one of his posts has been deleted where did have some more information,regarding his issue,no idead why
However ,if you look at his other posts clearly,you will see that he has already confirmed that black smoke was at idle and cleared up as soon as he drove off!This being the case,he already got his answer!
With regards to the DDE light,as you should know,this only stays on more than one sec ,under freezing conditions,which is the only time the engine needs the glow plugs!
I am out of this thread,as OP not provididng enough feedback and we are just wasting our times !At least we tried to help!