Problem with my vw golf gt tdi 150bhp

Can any one help me with this my car has lost power and wen its ticking over there's loads of white smoke coming out exaust any one help please

 

boost pipe split,or headgasket leak,

 

Would this problem make engine sound rough knocking etc

 

150 models can suffer from camshaft/follower failure, that could cause knocking etc.

 

did you get this sorted as my vw golf tdi pd150 is doing exactly the same smoking on acceleration loads of white smoke

 

Loads of white smoke is usually an injector issue. The injector is weeping fuel or not closing properly. You may be able to identify which one by looking at the injector balance in VAG-COM measuring blocks. This can cause dilution of the oil as the excess diesel can find it's way into the sump.
Could also be lack of compression on a cylinder.
Diesel that makes it into the exhaust just vaporizes into the white smoke you see. I am assuming it's not loosing coolant.
This is a video of a 3.0 TDI with injector issues. The injectors weep fuel into the cylinder.
https://www.youtube.com/watch?v=ZBY6KZbqyFk

 

You are a top bloke I shall look into this and let you know my findings