Ford Escort 1.8 TD Servofreno

I have a small problem with the car a car, the emptiness pipe sucks the air but I don't know if enough because the servo brake does not work. Can anyone tell me how to know if the emptiness that makes me the hose is enough

Hello, I do not know what a void pressure it works but basically if you unplug the pipe and with the starting engine you put your finger and suck it a little should something act.
Have you made sure that connected to the servofreno does not get air into the rubber slanders of the housing where it plugs?
Have you made sure that the membrane inside the servofrane is in good condition?
If in the capture of the pipe that connects with the servofrane, it has an anti -background valve, have you proven that the operation is correct?
All the best

Hello, as Oriano tells you, follow the steps and when the empty pipe is connected in the Sevo, he steps on the brake pedal would have to make a small noise the servo as a blow that is a sign that the Sevo works