Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
First, this vehicle doesnt have a carbutator. It has what is called Throttle Body Injection (TBI) it is fuel injected, and as you know runs on an electric fuel pump in the fuel tank.
I need to ask a few questions:
Will it start now?
If not, can you hear the fuel pump running for a couple of seconds when you turn the key just to the on position?
Do you have a testlight or voltmeter to test for power to the fuel pump?
This system has a fuel pump relay located in the passenger side firewall area under the hood (see pic below) I have also included the wiring schematic for the relay. First check to see that you have power to the orange wire to the relay with the key in the on position, then make sure power is going through the relay to the grey wire that goes back to the fuel pump.
Keep in mind that with the key only in the on position, the relay will shut off after 1-2 seconds, and is supposed to stay on all the time when cranking the engine.
If all checks out good there, check for power to the grey wire at the fuel pump harness connection, if you have power there,,,,replace the fuel pump.
If you have further questions on this, please feel free to reply. Thanks for asking!
If you have further questions, just let me know!
The oil pressure switch could be at fault, as soon as it detects around 3psi, it allows the fuel pump to activate, this is a safety fateure for the engine, so if it doesnt have any oil, it wont start and ruin the engine,. You can just unplug it and jumper the connector terminals and see if it starts.
I'm betting that the fuel pump is the culprit here, you will know once you test to see if it is running, if you hear it running, and there is spark to the spark plugs, it will need to be replaced.
Please keep me posted once you get there, and if you need anything else, just holler!