Fiat Siena TD 1.7 does not go after 2200 rpm

Hello, well here that is called decarbonizing, doing it two or three times more, it is likely that the other owner used it very soft, as we say with butter, remember that the iron are iron and have no life, one gives them life, and many times for taking care of it so much what we do is harmful to the engine, you give it sole and you will see how it is discarded, greetings