how can I fix the P0302 misfire code in my Volkswagen Golf MK7 (2015-2019)

Solution

1. Preparation

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

2. Replace Spark Plug

1. Remove the engine cover if applicable.
2. Disconnect the ignition coil connector on cylinder 2.
3. Unbolt and remove the ignition coil from cylinder 2.
4. Use a spark plug socket to remove the old spark plug from cylinder 2.
5. Inspect the spark plug socket for debris before installing a new spark plug.
6. Install the new spark plug and torque it to the manufacturer’s specification (typically around 20-30 Nm).
7. Reinstall the ignition coil and connect the connector.

3. Inspect and Replace Ignition Coil (if necessary)

1. If the ignition coil is found faulty, replace it with a new one.
2. Ensure the old coil is removed and the new one is seated properly.
3. Connect the ignition coil connector firmly.

4. Clean or Replace Fuel Injector (if necessary)

1. If the fuel injector is clogged, remove it from the fuel rail.
2. Clean the injector using a dedicated injector cleaning kit or replace it with a new one if necessary.
3. Reinstall the fuel injector ensuring it is properly seated.

5. Perform Compression Test (if necessary)

1. Attach the compression tester to the spark plug hole of cylinder 2.
2. Crank the engine and record the compression reading.
3. Compare the reading to manufacturer specifications; replace the cylinder head gasket or perform internal engine repairs if compression is low.

6. Final Assembly

• Reinstall any components removed during the repair, including the engine cover.
• Reconnect the battery.