No fuel issue

[DuctTape4Ever]

My 88 C1500 with a 305 tbi will crank and will not start, but if gas is poured down the injectors it starts,sputters and dies after anywhere from 3-11 seconds after it fires. I have replaced the fuel pump relay, removed the fuel filter (which has ~750 miles on it) turned on the key so see if fuel came out, but none did. Yet I hear a humming sound from what i think is the fuel pump. I have the tank rigged up with a ratchet strap, which has worked fine since the rear strap broke (~90 miles). Also the fuel gauge indicates that the tank is 2/5 ths full, which is correct and i added another 4 gallons in the tank and still no start. My guess is that the computer won’t engage the fuel pump, but that is just a guess. Thanks in advance

 

[GarrettGmc]

Could something have gotten into the line between the pump and the filter?

 

[skylark]

Crack the line at the throttle body to verify that you are getting fuel. If you are then you may have a bad ignition module. It is what sends the signal to pulse the injectors.

 

[evilunclegrimace]

It sounds like the rubber hose between the fuel pump and the pressure line is off. You need to run a fuel pressure test to make sure that the system is getting 9-13 psi while cranking.