When you change the diesel filter, it is recommended that you fill the container where you are lodged with a clean diesel to top, or that after mounting it and before starting it, you give the pear to the diesel. In this way you will completely eliminate air bubbles in the diesel circuit, preventing the car from stopping as soon as it is left due to lack of diesel. Once started, leave it a minute to idle or slightly accelerated (around 1200 1500 rpm) to finish purging alone.
To clean the turbo well, the good would be to disassemble the engine and clean the compressor turbine with diesel and a brush, ensuring that it does not between the lubrication tube or the exhaust turbine.
After having cleaned it, you blow it with compressed air and by the greased racor you put a few triggers with the oil and normal engine oil (to remove the diesel from the axis bearings).
You ride it and keep the engine over 1500 rpm for a minute, so that all the diesel that could have been on the escape side and in the admission snail is evaporated.
The intercooler and the air collector, you can submerge them for several hours in gasoline, solvent, diesel or water with detergent (motor cleaner) and find a brush where you can.
Eye with the causic soda because aluminum is eaten.
When you get it out of the "bath" you clarify it well with pressure water, and if you could wash it with a pressure water hydrolavator it would be the best way to remove all the oil from the interior, especially from the intercooler.
Notice, because something is noticeable, especially when you clean intercooler more than the turbo or collector, since it is where the air has the most restriction when it passes when it gets dirty.
Greetings and hopefully I don't give you much war!