Cadillac: fuel pump, fuel pump relay, dash lights


Question
i have replaced the fuel pump but their is no gas passing to the dfi carb the car is 1984 coupe deville 2dr with a 4100

Answer
Do you have any computer cODES ?.


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..