Peugeot 406 HDI Black Smoke Problem

Let me tell you in advance I did not read the topic I did not search on google, and I could not find the answer to the question, so I needed to open this topic.

2004 Model 406 HDI model car owner, my car is at 120,000 km, I bought the car for about 3 months and frankly, the car is so comfortable, I really liked the car, but for the last 3 days there was a black smoke coming from the exhaust when I pressed the gas to the related service. the mast seemed to have found the problem The turbo hose had been torn to a small extent, and the hose changed (230 TL) as well as the entire air filter box and the air filter were cleaned.

The black smoke in my car has decreased significantly and the traction of the car has increased, but there is still a bit of black smoke, and I don't think it is due to diesel oil because it is where I picked up the diesel for 12 years, but the gasoline (BP - Turkmenler Petrol - Kayseri) is said to be from the injectors but the settings of the injectors are 1 I don't think it will deteriorate in a day.

Guys, did anyone have this problem? If yes, how did they solve the problem? I would be happy if you enlighten me on these issues.