my Skoda Octavia NFL (2020-Present) has a rough idle after starting what's the cause

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, multimeter, fuel pressure gauge, vacuum gauge.
• Disconnect the vehicle battery to ensure safety while working on electrical components.

2. Replace Spark Plugs

• Locate and remove the ignition coil cover if necessary.
• Disconnect the ignition coils and remove them using a socket.
• Extract the old spark plugs using a spark plug socket.
• Inspect the old spark plugs for wear; replace with new spark plugs as needed (specify gap as per manufacturer’s specifications).
• Reinstall the ignition coils and reconnect them securely.

3. Clean or Replace Air Filter

• Open the air filter housing as per manufacturer’s instructions.
• Remove the old air filter.
• Inspect the air filter housing for debris and clean if necessary.
• Install a new air filter ensuring proper fitment.

4. Inspect and Repair Vacuum Leaks

• Visually inspect all vacuum hoses for cracks or disconnections.
• Use a vacuum gauge to test the integrity of the vacuum system.
• Replace any damaged or leaking hoses to ensure proper air-fuel mixture.

5. Verify Fuel Pressure

• Attach the fuel pressure gauge to the fuel rail as per the manufacturer's service manual.
• Start the engine and observe the fuel pressure reading; it should meet manufacturer specifications.
• If pressure is low, inspect the fuel pump and fuel filter for issues.