- Fuel is flammable and hazardous! Disconnect the negative terminal of the battery and relieve the pressure in the fuel system before beginning.
- Only work in a well-ventilated area as vapors from the fuel system can be harmful if inhaled.
- Replacement electronic fuel pump (same type and specifications as original pump)
- Fuel line connectors
- Hose clamps
- Screwdriver set
- Wrench set
- Pliers
- Gasoline-resistant sealant
- Fuel injector cleaning spray (optional)
1. Locate the existing mechanical fuel pump.
- Typically located on the engine block (for engines with in-tank fuel pumps, locate the fuel pump module within the fuel tank).
2. Disconnect the fuel lines.
- Loosen the hose clamps and remove the fuel lines connected to the mechanical pump inlet and outlet ports.
- To relieve the system of fuel pressure, the injectors should be disengaged. Use an injector puller to remove the fuel injectors and let them sit on a clean towel. Be extremely careful not to spill fuel.
3. Remove the old fuel pump.
- If an engine-mounted external pump, remove the bolts or screws holding it in place and lift it off.
- If in-tank, remove the fuel tank and then remove the fuel pump module following the manufacturer's specific instructions.
4. Install the new fuel pump.
- For external pumps, place the new pump into position, ensuring proper orientation according to the fuel flow arrows.
- For in-tank pumps, refer to the vehicle-specific instructions.
- Tighten the mounting bolts or screws securely.
5. Reconnect the fuel lines.
- Reattach the fuel lines to the pump's inlet and outlet ports and secure with hose clamps.
- Reinstall the fuel injectors, using a proper injector socket, and verify all electrical connections to the injectors are secure.
6. Perform electrical connections (if applicable).
- For external pumps that require electrical connection, refer to the pump's installation instructions.
- Connect positive and negative wires accordingly, ensuring secure connections.
7. Prime the fuel system.
- Turn the ignition key to the "ON" position for several seconds (without cranking the engine) to allow the fuel pump to prime the system with fuel.
- Repeat this step a few times until you hear the pump building pressure.
8. Start the engine and check for leaks.
- Crank and start the engine. Look for any fuel leaks around the fuel lines and pump connections.
- Listen for the steady pumping sound of the electronic fuel pump.
9. Perform injector cleaning (optional).
- Spray a small amount of fuel injector cleaning spray (if available) into the throttle body's air intake while the engine is running. This helps clean and lubricate the fuel injector components.
>Note: For older vehicles, a fuel pressure regulator might need to be installed alongside the electronic fuel pump. Follow any additional instructions provided with your specific pump's installation kit.
10. Test drive the vehicle.
- Take the car for a short drive to ensure it runs smoothly and there are no issues related to the new fuel pump installation.
- When reconnecting fuel lines, ensure the hoses are properly seated and secure to prevent leaks.
- Use fuel-resistant sealant around connections for extra protection against leaks.
- Refer to a vehicle repair manual or specific vehicle instructions for any specific details related to your vehicle's fuel system configuration.
