my Skoda Octavia NFL (2020-Present) has a rough idle when I start the engine

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery to ensure safety while working on the vehicle.
• Allow the engine to cool down before starting work.

2. Inspect and Replace Spark Plugs

• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Disconnect the ignition coils by removing the connector clips.
  3. Unscrew and remove the spark plugs using a spark plug socket.
  4. Inspect the spark plugs for wear; replace them if they show signs of excessive wear or fouling.
  5. Install new spark plugs and torque them to the manufacturer's specifications (usually around 15-20 Nm).

3. Clean or Replace Fuel Injectors

• Sub-steps:
  1. Disconnect the fuel line and any electrical connectors from the fuel injectors.
  2. Remove the fuel rail, ensuring you have a container to catch any spilled fuel.
  3. Clean the injectors with a professional injector cleaner or replace them if they are clogged.
  4. Reinstall the fuel rail and ensure all connections are secure.

4. Check and Replace Throttle Position Sensor (if faulty)

• Sub-steps:
  1. Locate the throttle position sensor on the throttle body.
  2. Disconnect the electrical connector and remove the mounting screws.
  3. Install the new throttle position sensor.
  4. Reconnect the electrical connector and verify that it is securely attached.

5. Reconnect Battery and Test

• Reconnect the battery terminals.
• Start the engine and allow it to idle, monitoring for any irregularities.