Chevrolet Monza Year 94

I have a problem with my car, well the problem is that it does not start is an injection problem, when analyzing the subject I realize that my car has two bone pumps added an external pump, short story took the pump to try it on the outside and it worked when applying the running current, then I went to verify the circuit, I disconnect the pipe that arrives with pressure to the carburetor I realize that I arrive, then I said the injector. Have faults, I would like to know what you think friends hopefully help me to find the problem Greetings will be communicating us

I also forgot to tell them the butterfly sensors and it comes Voltage, what I thought it can be is ajor that the bomb they added is not an ass to lift the necessary pressure for the circuit can it be or not ???

You must check the pressure that reaches the TBI must defected from 35-45 psi if the pressure is very Czech that has injection pulse with a test lamp, also check if there is a spark, if everything is very czech distribution strap.