Cadillac Repair: Fuel Filter, cadillac eldorado, fuel pump relay

Question
I need to know how to remove the fuel lines from the fuel filter so that I can change the fuel filter. Car has power, will start if I spray starting fluid, but not getting any gas..Hoping to start with the fuel filter, and not have to change the pump.. 1991 Cadillac Eldorado 4.9 Liter

Answer
Fuel pump test:

1. Get yourself a helper.

2. remove the gas cap.

3. have one person listen in the gas tank at the gas cap opening.

4. have the other person turn the ignition switch to the ON position ONLY so as the dash lights come on. Do NOT attempt to start the engine.

5. As soon as the ignition key is turned to the ON position, The person at the gas tank should hear the fuel pump run for TWO SECONDS and then it should STOP.

6. Does it ?.

7. If it does NOT run for the 2 seconds the fault is either the fuel pump. fuel pump relay or the computer itself.