my Skoda Octavia NFL (2020-Present) starts but immediately stalls

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety.
• Allow the engine to cool down if recently operated.

2. Fuel System Inspection

• Fuel Pressure Check
  • Connect the fuel pressure gauge to the fuel rail.
  • Turn the ignition to the "ON" position (do not start) to check for pressure.
  • Pressure should match manufacturer specifications (typically between 50-60 PSI).
  • If pressure is low, inspect the fuel pump and filter for blockages or failures.

3. Throttle Body Cleaning

• Remove Throttle Body
  • Disconnect the intake duct and electrical connectors.
  • Unbolt the throttle body from the intake manifold.
• Clean Throttle Body
  • Use throttle body cleaner and a soft cloth or brush to remove carbon deposits.
  • Ensure the throttle plate moves freely and is not sticking.
• Reinstall Throttle Body
  • Torque bolts to the manufacturer's specified values.

4. MAF Sensor Testing

• Inspect MAF Sensor
  • Disconnect the electrical connector from the MAF sensor.
  • Use a multimeter to test the sensor output as per the service manual specifications.
• Clean MAF Sensor
  • Use MAF sensor cleaner to remove any contamination.
• Reconnect and Secure
  • Reattach the connector and ensure all fasteners are secured.

5. Ignition System Check

• Inspect Spark Plugs
  • Remove spark plugs and inspect for wear or fouling.
  • Replace any damaged or worn spark plugs.
• Test Ignition Coils
  • Use a multimeter to test the resistance of the ignition coils.
  • Replace faulty ignition coils as needed.