Hello everybody, i have 1991 2.8 turbo deisel comersial, the problem i have is when the engine is cold, i turn the key as normal, glow plug light goes out after about 4 seconds and the engine kicks up straight away but smokes heavily and spluters until i rev it up, after a couple of minates it clears and stops smoking, once its worm its no problem at all until its been standing and the engine cools down, any ideas would be greatly apreciated.