Volkswagen Golf MK7 (2015-2019) fuel pump making noise, is this normal?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety.
• Relieve fuel system pressure by removing the fuel pump fuse and starting the engine until it stalls.

2. Inspect Fuel Pump

• Tools Required: Fuel pressure gauge, multimeter, socket set, screwdriver
• Remove the rear seat or access panel to reach the fuel pump.
• Disconnect the electrical connector from the fuel pump.
• Inspect the fuel pump for any visible damage or corrosion.
• Reconnect the electrical connector and listen for the noise again.

3. Test Fuel Pressure

• Tools Required: Fuel pressure gauge
• Connect the fuel pressure gauge to the fuel rail.
• Turn the ignition to the "ON" position (do not start the engine) to check for initial fuel pressure.
• Start the engine and take note of the fuel pressure readings. Compare with manufacturer specifications (typically around 50-60 psi for most setups).
• If the pressure is low or fluctuating, further investigation of the fuel pump may be necessary.

4. Replace Fuel Pump (if needed)

• If the pump is faulty, remove the fuel pump assembly.
• Tools Required: Socket set, fuel line disconnect tool
• Follow the reverse procedure to install the new pump, ensuring all seals and clips are in place.
• Reconnect the electrical connector and fuel lines securely.

5. Reassemble and Test

• Reinstall the access panel or rear seat.
• Reconnect the battery.
• Start the vehicle and verify that the fuel pump operates quietly and efficiently.