white smoking 300tdi....

Right some history....

Stuffed my own 300tdi engine and having a right ball ache rebuilding it so I decided to just swap it over, 1 engine out 1 engine in...

Hired a van and bought a replacement last weekend which I was told by the seller that the engine was a good runner with less than 80k on it.

Did the rear oil seal and put my fairly new delphi lift pump on it and a new timing belt and stuck the engine in. Starts it up ok but there's white smoke on tick over and clouds of white smoke and lumpy running on fast idle. Swapped the injectors for my old ones and still the same so swapped the injector pump for my old one and re did timing belt and it's still the same and now I'm stuck as to what to do next. I don't know anyone with a compression tester

Thoughts please as I need it back on the road ASAP and it's going to cost me £90 to hire a van to return it so I'd prefer to sort this one before I think about buying another one

ps I know I've listed it in the tratter section as well.....

White smoke is air in the fuel start checking your fuel lines