Hey guys,
I have a 1991 GMC Kodiak truck with a 427 motor. I have a fuel problem. I have fuel to the carb but it has , and I don't know what you call these, electric controlled venturis. the are 2 different ones each with 2 electrical wire comeing out. I need to find a wiring diagram as to what controls the current to those venturis. If I dump gas in the carb, the truck with start right up and run until that gas is gone. thes carb is not pumping. I was told one lead should be hot and the other is a pulsing ground when the motor turns. Any help?

What you have is TBI= Throttle Body Injection. Do you have fuel pressure, when was the fuel filter changed last, it is usually under the truck on the drivers side, Check it out and post back.

yes, i have fuel to the carb. I removed the line at the carb and when I spin the motor it pumps out good at the carb.