2010 1.4 hdi bipper

I am a 2010 1.4 bipper vehicle user. A few months ago the vehicle suddenly crashed. The engine took it under protection, even with such a low traction that it seemed overwhelmed that it could not find its time to shift from 3rd gear to 4 gear. Even the protection on the turbo would ignite. I took it to a few masters, some said the turbo is defective, some said maf. The air flow sensor someone else said curvy, no master made me satisfactory explanation. I took it to another master on the advice of a friend. Master brother, none of us are masters, it is difficult to know what has not happened to us before, it is not necessary to say aha sura aha here. He told me to buy 2 liters of gas that the problem was simple with a few attempts and a review of the engine. Until I took the gasoline, the master intercol was dismantled, the intercol was clogged, trying to put air on the turbo intake monifold due to lubrication over time, it caused traction and sensor malfunction because it could not feed with sufficient air due to the interference in the interlock. In short, the whole problem was intercol occlusion.

First of all, welcome to us. unfortunately, finding a master is very difficult, you are going to be a good master in the industry. Thanks in the information.