my Skoda Octavia NFL (2020-Present) won't start, is it a fuel pump issue?

Solution

1. Preparation

• Gather tools including a socket set, multimeter, and fuel pressure gauge.
• Ensure the vehicle is parked on a level surface and the ignition is off.
• Disconnect the negative battery terminal to prevent electrical shock.

2. Check Fuel Pump Fuse

• Locate the fuse box and find the fuel pump fuse (refer to the owner’s manual if necessary).
• Remove the fuse and inspect it. If it is blown, replace it with a fuse of the same amperage.
• Reconnect the negative battery terminal and attempt to start the vehicle.

3. Test Fuel Pump Operation

• Turn the ignition to the "ON" position without starting the engine.
• Listen for the fuel pump priming sound (a faint whirring noise) for about 2 seconds.
• If no sound is heard, check the fuel pump relay located in the fuse box and replace if necessary.

4. Measure Fuel Pressure

• Attach the fuel pressure gauge to the fuel rail service port.
• Turn the ignition to the "ON" position and read the pressure on the gauge. Compare with manufacturer specifications (usually around 50-60 psi for many vehicles).
• If pressure is low or absent, the fuel pump may need replacement.

5. Inspect Wiring and Connectors

• Disconnect the fuel pump connector and inspect for any corrosion or damage.
• Use a multimeter to check for continuity between the connector and the fuel pump.
• Repair or replace any damaged wiring or connectors.

6. Replace Fuel Pump (if necessary)

• If the fuel pump is confirmed faulty, relieve fuel system pressure by disconnecting the fuel pump relay and starting the engine until it stalls.
• Disconnect the negative battery terminal.
• Remove the fuel tank access panel (if available) or drop the fuel tank to access the fuel pump assembly.
• Disconnect fuel lines, electrical connectors, and remove the retaining ring to remove the old pump.
• Install the new fuel pump by reversing the removal steps, ensuring all connections are secure.
• Reconnect the negative battery terminal and test the vehicle.