how to fix P0302 cylinder 2 misfire in Volkswagen Golf Eighth Generation (2020-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle's battery to prevent electrical shorts.
• Allow the engine to cool before starting any work.

2. Replace Spark Plug (if necessary)

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the ignition coil from cylinder 2 by unscrewing the retaining bolts and disconnecting the electrical connector.
• Remove the spark plug using the spark plug socket, being careful not to damage the threads.
• Install the new spark plug and torque it to the manufacturer's specification (typically around 20-30 Nm).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Replace Ignition Coil (if necessary)

• Tools Required: Socket set, torque wrench.
• Remove the ignition coil from cylinder 2 as outlined in the previous step.
• Install the new ignition coil, ensuring that it is seated correctly.
• Torque the ignition coil mounting bolts to the manufacturer's specifications.

4. Inspect/Replace Fuel Injector (if necessary)

• Tools Required: Socket set, fuel line removal tool (if applicable).
• Remove the fuel rail if necessary to access the fuel injector for cylinder 2.
• Disconnect the fuel injector's electrical connector.
• Remove the fuel injector from the cylinder head.
• Inspect the injector for blockages or damage; replace if needed.
• Reinstall the injector and reconnect the electrical connector.

5. Compression Test (if necessary)

• Tools Required: Compression gauge.
• Remove the spark plug from cylinder 2.
• Insert the compression gauge into the spark plug hole.
• Crank the engine and note the compression reading. Compare it to the manufacturer's specifications.
• If compression is low, further investigation into potential mechanical issues is required.