How to Replace a Mechanical Fuel Pump With an Electrical Fuel Pump

The choice between a mechanical or electrical fuel pump is more of a personal preference than a choice between a pump that is better than another. But one thing is true: If you have a high performance engine and need to get more fuel to your motor, you will want to replace a mechanical fuel pump with an electrical fuel pump.

Things You'll Need

• Screwdriver set
• Socket set
• Open end box wrench set
• Fuel line disconnect tool

Instructions

Directions

1. Unhook the battery by disconnecting the positive and negative terminal wires.

2. Remove the old mechanical fuel pump by unhooking and removing the gas filter tube with a Phillips screwdriver.

3. Use a socket set to undo the bolts that hold in the gas tank. This will allow you to drop the gas tank down.

4. Drop down the gas tank and unhook the fuel lines from the tank with a fuel line disconnect tool.

5. If there are bolts holding the electrical system and fuel lines in, remove them with the socket set.

6. Use a flathead screwdriver to unhook the wires at the top of the gas tank, near the fuel lines, and remove the gas tank from the vehicle entirely.

7. Remove the sending unit from the gas tank. There will also be a metal ring on the sending unit. Remove the metal ring by working it off using a flathead screwdriver and a hammer.

8. Remove the mechanical fuel pump.

9. Install the electrical fuel pump near to where the mechanical fuel pump came out and mount it securely.

10. Run your inlet hose into the electrical fuel pump and wire it according to the instructions that came with it. Different electrical fuel pumps will have specific directions for that type of pump.

Tips & Warnings

• Hook your fuel pump up to an ignition hot; this means that the fuel pump will only come on when you turn the key on.

• This process will expose you to a lot of gas. If you are sensitive to gas or gas fumes, wear rubber gloves and a respirator.