how to replace a bad fuel pump in Honda Civic 10th Generation (2016-2021)?

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the battery to prevent electrical shorts.
• Relieve fuel system pressure by removing the fuel pump relay and starting the engine until it stalls.

2. Access Fuel Pump

• Remove the rear seat or trunk liner to access the fuel pump access panel.
• Unfasten the access panel screws and remove the panel.

3. Remove Old Fuel Pump

• Disconnect the electrical connector from the fuel pump.
• Carefully detach the fuel lines from the pump, using a fuel line disconnect tool if necessary.
• Unscrew the fuel pump assembly retaining ring and lift the fuel pump assembly out of the tank.

4. Install New Fuel Pump

• Place the new fuel pump into the fuel tank, ensuring the O-ring is properly seated.
• Secure the pump assembly with the retaining ring and tighten it to the manufacturer’s specifications (usually hand-tight plus a quarter turn).
• Reconnect the fuel lines and electrical connector.

5. Reassemble

• Reinstall the fuel pump access panel and secure it with screws.
• Reconnect the battery.

6. Test the System

• Turn the ignition key to the "ON" position (without starting) several times to prime the pump and build pressure.
• Start the engine and check for leaks around the pump and connections.