how to troubleshoot engine misfire P0302 in Volkswagen Golf Eighth Generation (2020-present)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool before beginning work.

2. Inspect and Replace Ignition Components

• Tools Required: Socket set, torque wrench, ratchet, spark plug socket.
• Remove the engine cover (if applicable) to access the ignition coils.
• Disconnect the wiring connector from the ignition coil for cylinder 2.
• Remove the ignition coil using the appropriate socket.
• Inspect the spark plug for wear or damage; replace if necessary.
• Install a new ignition coil (if faulty) and torque it to manufacturer specifications (typically around 10 Nm).
• Reconnect the wiring harness to the ignition coil.

3. Test and Replace Fuel Injector

• Tools Required: Fuel injector puller (if needed), clean cloth.
• Disconnect the fuel injector connector for cylinder 2.
• Remove the fuel rail (if necessary) to access the fuel injector.
• Test the fuel injector's resistance with a multimeter; replace if out of spec.
• If replacing, ensure the new injector is compatible and install it correctly.
• Reattach the fuel rail and reconnect the injector connector.

4. Compression Test

• Tools Required: Compression tester.
• Remove the spark plug for cylinder 2.
• Install the compression tester into the cylinder head.
• Crank the engine a few times to get a reading; compare it to manufacturer specifications.
• If compression is low, further investigation is needed for potential internal engine issues.