how can I fix P0301 misfire code in my Volkswagen Golf Eighth Generation (2020-present)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shocks.
• Allow the engine to cool completely before starting work.

2. Inspect and Replace Spark Plug

• Remove the engine cover if applicable.
• Locate and remove the spark plug for cylinder 1 using a spark plug socket.
• Inspect the spark plug for signs of wear, damage, or carbon buildup. Replace if necessary.
• Torque the new spark plug to the manufacturer's specification (typically around 15-20 lb-ft).

3. Inspect and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil for cylinder 1.
• Remove the ignition coil by pulling it straight out from the spark plug.
• Inspect the ignition coil for cracks or damage. Replace with a new one if faulty.
• Reinstall the ignition coil, ensuring a secure fit, and reconnect the electrical connector.

4. Check and Clean Fuel Injector

• Disconnect the fuel injector connector for cylinder 1.
• Remove the fuel injector using the appropriate tool.
• Inspect the injector for clogs or leaks; clean it with a fuel injector cleaner or replace it if necessary.
• Reinstall the injector and reconnect the wiring harness.

5. Perform Compression Test

• Remove the spark plug from cylinder 1.
• Insert a compression gauge into the spark plug hole.
• Crank the engine and observe the gauge reading. It should be within the specified range (typically around 150-200 psi).
• If the compression is low, investigate further for potential valve or piston issues.