Smoking 300 tdi

Hi I've got a problem with my 300 tdi it's smoking ! It's had this week new piston rings, big end sleeves ,head gasket ,timing housing gasket , timing belt gasket, valve caps ,turbo ,cleaned intercooler and all air intake hoses, cam belt, alternator, serpentine belt, oil filter and reseated injectors with new brass seals oil and coolant but it's still smoking !!!!!!! I want to cry lol

What colour smoke

It's a white smoke !

I'm thinking it could be the pump timing out a little or the glow plugs !