Hard white smoke, no power and stutters heavily

[Mike reid]

Hi, I'm new to the forum so be kind 

I've got an audi a3 2.0 tdi 170 engine code BMN. Was driving the other day and all was fine u til I came to a junctions, lost all power (did not cut out) and was smoking white/grey smoke really bad. No codes stored, had the injectors checked and been told they are fine. Egr valve has been blocked. Turbo vanes are working accordingly. The only thing i can find is the tandem pump seems wet and looks like its leaking, got oil in the fuel filter. Would this cause all these issues, any ideas? Has a full history and cambelt has been replaced. High mileage at 190k. Any ideas would be welcome. Thanks 

[Steve Q]

Is the car retaining fluids? 

[Mike reid]

Hi Steve, not losing oil or coolant. Thanks

[Stevey Y]

Hi have you checked the turbo pipes as boost leak would cause similar symptoms .

Steve.