Cadillac Repair: car will crank but wont start, fuel pump relay, cadillac sedan deville

Question
i have a 1996 Cadillac sedan deville and it will crank but wont start and i have changed the coils and spark plugs and wires and it seems to get fuel can it be anything else wrong and can i spray starting fluid in a 4.6 liter fuel injected and where can i spray it?

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 ?.


If you do NOT hear it run, in most cases the fault is the fuel pump relay or the fuel pump..



let me know.