Focus TDCI fails when I accelerate it thoroughly

Hello friends I have a focus that when I warm I go on the route I accelerate it thoroughly and stay. I have to take it halfway away from the accelerator and sometimes it is difficult for him to start is a 2007 diesel focus with coman rail

You must scane it may be failure in the pressure system of the Riel de Ahi the problem is generalized

In that system it combines you to scan it as Joni says, because they have electronic accelerators both on the pedal and in the admission body, they are very expensive and to change them to try, so scan to get out of doubt before performing any test or change and loop that system is delicate and expensive so that if you do any test you should ask before because if you do it badly the damage can be much greater.