Why it's possible the fuel pump is the issue:
* No fuel flow: If you removed the fuel filter and turned the engine over, and no fuel came out, it strongly suggests a lack of fuel pressure. The fuel pump is responsible for creating that pressure.
* Fuel pump failure: Fuel pumps can fail for various reasons, like wear and tear, electrical problems, or even a clogged fuel filter.
However, it's not the only possibility:
* Clogged Fuel Filter: While you already removed it, a clogged fuel filter could have been the issue even before you pulled it off. Ensure the fuel filter you pulled off wasn't heavily clogged, and the fuel lines leading to it are clear.
* Fuel Line Problems: A cracked or pinched fuel line could prevent fuel from reaching the engine.
* Fuel Pressure Regulator: A faulty fuel pressure regulator could be causing the fuel pump to not create sufficient pressure.
* Electrical Problems: A faulty fuel pump relay, blown fuse, or wiring issue could prevent the fuel pump from being powered.
* Other Engine Issues: While less likely, a problem with the ignition system (spark plugs, wires, distributor) or a bad starter could also prevent the engine from starting.
What to do next:
1. Check for fuel flow again: With the fuel filter still off, try turning the engine over again. This time, listen carefully for the fuel pump running (a whirring sound) and look for fuel coming out of the line.
2. Inspect the fuel lines: Check for any cracks, leaks, or pinched areas in the fuel lines.
3. Test fuel pressure: If you have a fuel pressure gauge, connect it to the fuel rail and see if you're getting the correct pressure for your 1996 Lumina.
4. Inspect the electrical system: Check the fuses, relays, and wiring related to the fuel pump.
5. Consider other engine issues: If none of the above yields results, it's time to get your car inspected by a mechanic to rule out any other engine problems.
Remember:
* Safety first: Fuel is flammable, so be cautious when working around fuel lines and the fuel pump.
* Professional help: If you're not comfortable with car repair, it's best to take your Lumina to a qualified mechanic.
