Blue smoke audi a4 tdi 170

[Adam tdi 170]

Hi I'm new to this site so bare with me
I have an audi a4 tdi 170 56 plate
It's had dpf removed and remap to suit , new egr , throttle body, maf ect
I find when I start in the mornings it's sweet go on a run no probs , however when I switch engine off and leave to cool down and then start it again it start idleing rough and lots of blue smoke this can be cleared with another short run , also had 2 new injectors , I've been told it's prob the the turbo the car has done 107k been really looked after over the years could anyone give me some advice as new turbo is not cheap
Thanks a lot

 

[adamss24]

The 2.0tdi suffers with balance shaft issues which also drives the oil pump. The hex shaft that connects the 2 wears off and engine is slowly starved of oil. Turbo and top end it's the first to suffer but in your case could be a number of things. Best to take the car to a good independent and check...

 

[Adam tdi 170]

Cheers for the reply Yes I read about this problem also been told it may be injector , I'm taking it tomorrow but to be fair they could tell me anything really !! Is the balance shaft a big job ?