Skoda Octavia NFL (2020-Present) engine misfire and loss of power when accelerating

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative terminal of the battery to ensure safety.
• Allow the engine to cool before starting the repair.

2. Inspect and Replace Spark Plugs

• Remove the engine cover (if applicable).
• Use a socket set to remove the spark plug wires or ignition coil packs.
• Use a spark plug socket to carefully extract the spark plugs from the engine.
• Inspect each spark plug for signs of wear or damage; replace if necessary.
• Install new spark plugs, torquing them to the manufacturer’s specifications (usually around 25 Nm).

3. Test and Replace Ignition Coils

• Use a multimeter to check the resistance of each ignition coil.
• If any coils show abnormal resistance, remove the faulty coil(s) using a socket set and replace them with new ones.
• Reinstall the ignition coils and reconnect the spark plug wires.

4. Fuel System Inspection

• Attach a fuel pressure gauge to the fuel rail.
• Turn the ignition on (do not start the engine) to check for fuel pressure; it should match manufacturer specifications (usually around 3.5 to 4.5 Bar).
• If fuel pressure is low, check the fuel pump and fuel filter for blockages; replace the fuel filter if necessary.
• If required, replace the fuel pump.

5. Air Intake and Vacuum System Check

• Inspect the air filter and replace if clogged.
• Check the intake manifold for leaks or blockages.
• Examine vacuum lines for cracks or disconnections, replacing any damaged lines.