how to fix P0302 misfire code in Volkswagen Golf MK6 (2009-2014)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety during repairs.
• Allow the engine to cool down before starting work.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, gap gauge.
• Remove the ignition coil from cylinder 2 by unscrewing the bolts and lifting it out.
• Remove the spark plug using a spark plug socket.
• Inspect the old spark plug for wear and proper gap; replace with a new spark plug if necessary.
• Torque the new spark plug to the manufacturer’s specifications (typically around 22 ft-lbs).
• Reinstall the ignition coil and secure it with bolts.

3. Replace Ignition Coil

• Tools Required: Socket set.
• If the spark plug is fine, proceed to replace the ignition coil.
• Remove the faulty ignition coil from cylinder 2.
• Install the new ignition coil and ensure it is seated properly.
• Reconnect any electrical connectors.

4. Inspect and Clean Fuel Injector

• Tools Required: Fuel injector removal tool, cleaning solvent.
• Disconnect the fuel line and electrical connector from the fuel injector for cylinder 2.
• Remove the fuel injector from the rail.
• Clean the injector using a specialized cleaning solvent or replace it if defective.
• Reinstall the cleaned or new injector and reconnect the fuel line and electrical connection.

5. Perform Compression Test

• Tools Required: Compression tester.
• Remove the spark plugs from all cylinders.
• Insert the compression tester into the spark plug hole of cylinder 2 and crank the engine to measure compression.
• Repeat for all cylinders and compare results; normal compression is usually around 130-200 psi.
• Address any cylinders with significantly lower compression.