Limp mode, smoking

[T_H_2004]

Hello, 

I have a 2014 2.0 tdi A6 c7, 

I've done a dpf delete, new egr with cooler so far

Issue with the car is there's lack of power and dark smoke from the exhaust when using any amount of throttle.

Since replacing the egr there's now a grey smoke and smell of diesel. Mechanic has advised for injectors could be the issue I have which would need replacing at a high cost. He has advised this due to the smell of diesel and Injectors/engine block shaking too much when the engine is running.

 

My question is before I replace the injectors which is quite costly are there any other parts to check before doing this job

 

I also have suspicions that the DPf remap for the ecu was not done properly but several mechanics have advised that this won't fix the issue however does need doing. 

 

Car has now been off road a few weeks now so I would appreciate any help I can get with this issue

 

Apologies if I am missing anything but if there is any info I've not included let me know and I will provide .

Kind regards 

 

[Steve Q]

If the car hasn't had the remap to map out the dpf or egr then this could be the problem. 

Have you had a diagnostic check to see if any fault codes flag up? 

Also the injectors can be sent off to be tested to see if any are faulty. 

Also have the injector seals been checked as a leaking injector seal can cause these symptoms.