hi have a 2009 2.0 vw diesel engine lancer losing power. turbo changed, boost solenoid changed, vaccum solenoid changed, no difference, any ideas

 

Did you do any diagnosis first or did you just start changing out parts? What exactly are the symptoms......any new noises, excessive oil consumption, recent maintenance, changed the fuel separator recently, when did this start, getting worse every day, did this happen gradually or was it all at once you lost power, buying the fuel from some new place????all questions................changed the spark plugs recently (oh that's right it is a diesel!! )