Hi: I have a Kia Motor Frontier 2.5 plus.

This with the next problem loses strength and humans black were checked injectors, hoses of the intercooler, and the turbocompressor is changed and the problem remains the same. Please help is from 2010.

You should do it a diagnosis to see if it throws any code, the flow rate, atmospheric pressure sensor (in the ECU) or have some problem in the diesel pump (flow regulator) or in the injection ramp (fuel pressure sensor) can be wrong (there is no doubt that it is "burning badly" for what you comment on the black smoke and the lack of power.

Look I have seen several 2.5 oil tankers not that year, but if you already check the tuning and the pump's avan, and everything ok is, disconnect the air hose from the air valve and further feeds and cut the smoke, it has worked at least.