No Pulse to injectors

I have changed fuel pump, filter, throttle body positioning sensor, map sensor idle control sensor, distributor, cap, rotary button, spark plug, wires, chased wires down to see if I might have a bad ground. But yet one of my injectors will not spray. I can swap wires from one injector to the other injector and then it works. Can anybody help me out?

Just asking, do you think it could be the spark control modulator? I looked at the wiring schematics that you sent it only has one 10 amp fuse in the fuse box for both A&B injectors. Other than that everything is telling me that it might be my catalytic converter, but I kind of doubt that since I am not getting spark to the injector.

Thank you.

Hi, I have a 1988 chevrolet silverado c1500, swb, 5.7L v8 and the other day in a parking lot I tried starting it and it would never fire. Called my dad and he towed me home.(Short drive) and we found out neither fuel injectors are spraying. This is the first time we've had issues with this, and it usually starts up like a normal old truck. Any help? I can answer other questions if needed to find a solution

Put a funnel I the gas tank and have someone turn the key to on. The fuel pump in there will hum if its running. If not then take a hammer and rap firmly on the bottom of the gas tank and try it again. If still nothing, then is there any engine light on?

Come to find out I had a wire that was corroded so bad it fell apart about six inches behind the computer underneath the glove box. Thanks for helping me out would have never been able to figure that out.

Electrical problem
1988 Chevy Silverado V8 Four Wheel Drive Automatic

fuel injector won't spray

Hi. So we have had a 1988 Chevrolet G20 v8 van in our yard for over a week now that has us stumped. The customer drove it to a friends house. They went to a funeral. Came back tried to start it and it wouldn't start. At that point it was firing but not starting. He changed the distributor cap and rotor the ICM and he botched a rebuild of the throttle body. We have rebuilt the throttle body again changed the inner pickup coil in the distributor and the ignition coil. Also put the wires all one spot to the right because they were all one spot retarded. Now the problem we have is its not getting fuel to the injectors unless you connect a ground wire from the wires to the body of the van. But then it pulses as it should but puts out way too much gas from the injectors and floods the motor. Please help