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

Solution

1. Preparation

• Gather tools and ensure the vehicle is parked on a level surface.
• Disconnect the battery to prevent any electrical shorts.
• Gather replacement parts based on diagnostic results.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Compression tester
• Multimeter
• Screwdrivers

2. Replace Spark Plug and Ignition Coil

1. Remove the engine cover if necessary, using a socket wrench.
2. Disconnect the electrical connector from the ignition coil on cylinder 2.
3. Remove the ignition coil by unscrewing the bolts and gently pulling it out.
4. Remove the spark plug using a spark plug socket; inspect for wear or fouling.
5. Install a new spark plug, tightening it to the manufacturer’s specified torque (usually around 20-25 Nm).
6. Install the new ignition coil and secure it with bolts, then reconnect the electrical connector.

3. Inspect and Replace Fuel Injector (if necessary)

1. Locate the fuel rail and disconnect the fuel line, taking care to relieve fuel pressure beforehand.
2. Remove the fuel injector harness connector.
3. Remove the retaining clips and pull the fuel injector out of the rail.
4. Install the new fuel injector, ensuring proper seating and securing with clips.
5. Reconnect the fuel line and harness connector.

4. Check for Vacuum Leaks

1. Start the engine and carefully spray a small amount of carburetor cleaner around the intake manifold and vacuum hoses.
2. Listen for changes in engine RPM which would indicate a vacuum leak.
3. Replace any damaged hoses or gaskets found during the inspection.