Skoda Octavia NFL (2020-Present) how to fix rough idle after startup

Solution

1. Preparation

• Gather all tools and parts needed.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery to prevent electrical shorts.

2. Address Air Intake

• Remove the air filter housing.
• Inspect and replace the air filter if dirty.
• Clean the throttle body using throttle body cleaner and a soft cloth.
• Reassemble the air intake system securely.

3. Fuel System Inspection

• Connect the fuel pressure gauge to the fuel rail.
• Start the engine and check the pressure reading.
  • If pressure is below specifications, replace the fuel pump.
  • If within specifications, proceed to inspect fuel injectors.
• Clean or replace fuel injectors if clogged.

4. Ignition System Repair

• Remove the ignition coil cover to access spark plugs.
• Inspect spark plugs for wear; replace if necessary with OEM parts.
• Test ignition coils for resistance using a multimeter; replace any faulty coils.

5. Final Assembly

• Reconnect the battery.
• Clear any error codes using the OBD-II scanner.
• Start the engine and allow it to idle, monitoring for any irregularities.