how to fix P0302 misfire code in Volkswagen Golf Seventh Generation (2013-2020)

Solution

1. Preparation

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

2. Replace Spark Plug

• Remove Engine Cover: Use a socket set to remove any bolts securing the engine cover and carefully lift it off.
• Access Spark Plug: Remove the ignition coil connector by pressing on the release tab and pulling it off. Unscrew the ignition coil from the cylinder head using a socket wrench.
• Replace Spark Plug: Use a spark plug socket to remove the old spark plug. Inspect the plug for wear. Install a new spark plug, ensuring it is gapped correctly (usually around 0.028 inches for VW). Torque the spark plug to the manufacturer-specified value (typically around 22 lb-ft).
• Reinstall Ignition Coil: Reinsert the ignition coil, securing it with the bolt and reconnecting the electrical connector.

3. Replace Fuel Injector (if necessary)

• Remove Intake Manifold: If the injector is not accessible, remove the intake manifold by unscrewing the bolts and disconnecting any sensors.
• Remove Fuel Rail: Disconnect the fuel rail by removing the retaining bolts and carefully lifting it off the injectors.
• Replace Injector: Pull out the old fuel injector from cylinder 2. Lubricate the O-ring of the new injector with engine oil and install it securely.
• Reassemble Fuel Rail and Intake: Reinstall the fuel rail and secure the intake manifold back to its position, ensuring all connections are secure.

4. Clear Codes and Test

• Reconnect the battery and use the OBD-II scanner to clear the P0302 code.
• Start the engine and allow it to idle, checking for any signs of misfire or roughness.