BMW on 1986 325ES

Good I have a BMW 325 is I received it in a business and brought the bound fuel pump, I changed it but it does not reach the pump and it seems that it does not send signal to the injectors.
Does anyone have an idea that this problem can be improvocating?

Checks when the car does not start ....

Successive controls
Immobilizer
Fuel cutting inertia switch - if electrical connections are mounted

-
Motor/fuse drums

/ Fuel pump relay/engine control relay
. Motor control system
Crankshaft
position
sensor Fuel Power Power regulator Injector
Sensor Flow sensor of the air volume/flow sensor of the air mass
Absolute pressure sensor

Motor

regime sensor/ camshaft

Pd, unless you are a mechanic ...

Thank you, I'm going to scan to see if the computer marks any sensor in poor condition.

Anything we are here to help, good luck.