my Skoda Octavia NFL (2020-Present) has a rough idle when starting

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on the vehicle.
• Allow the engine to cool down if it has been running.

2. Clean the Throttle Body

• Tools Required: Throttle body cleaner, soft cloth, socket set.
• Remove the air intake duct by loosening the clamps and disconnecting any electrical connectors.
• Spray throttle body cleaner inside the throttle body and use a soft cloth to wipe away carbon buildup.
• Reassemble the air intake duct and reconnect any electrical connectors.

3. Replace Spark Plugs

• Tools Required: Socket set, torque wrench, anti-seize compound.
• Remove the ignition coil cover to access the spark plugs.
• Unplug the ignition coils and remove them using the socket set.
• Replace the old spark plugs with new ones, applying anti-seize compound to the threads.
• Torque the spark plugs to the manufacturer's specifications (typically around 15 lb-ft).
• Reinstall the ignition coils and cover.

4. Inspect and Replace Air Filter

• Tools Required: None.
• Locate the air filter housing and open it according to the manufacturer's instructions.
• Remove the old air filter and inspect it for dirt or damage.
• Install a new air filter, ensuring it fits securely in the housing.

5. Check and Repair Vacuum Leaks

• Tools Required: Smoke machine or carburetor cleaner.
• Inspect all vacuum hoses visually for cracks or disconnections.
• Use a smoke machine to identify any leaks, or spray carburetor cleaner around suspected areas to see if the idle changes.
• Replace any damaged hoses or tighten loose connections.