why does my Volkswagen Golf MK7.5 (2020-Present) engine misfire when I accelerate

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the battery to prevent any electrical issues during repair.
• Allow the engine to cool before proceeding.

2. Inspect and Replace Spark Plugs

• Remove the engine cover if applicable.
• Using a socket wrench, carefully remove each spark plug.
• Inspect each spark plug for signs of wear, carbon buildup, or oil fouling.
• Install new spark plugs, ensuring they are gapped correctly according to manufacturer specifications (typically around 0.028-0.032 inches).
• Torque the spark plugs to the manufacturer-recommended specification (usually around 15-20 ft-lbs).

3. Check and Replace Ignition Coils

• Disconnect the electrical connector from each ignition coil.
• Remove the bolts securing the ignition coils using a socket wrench.
• Gently pull out the ignition coils and inspect them for damage or corrosion.
• Replace any faulty ignition coils with new ones, ensuring they are seated correctly.
• Reconnect the electrical connectors.

4. Inspect and Clean Fuel Injectors

• Remove the fuel rail if necessary, following the service manual.
• Inspect each fuel injector for clogs or leaks.
• Clean fuel injectors using a specialized cleaner or replace them if they are faulty.
• Reinstall the fuel rail and ensure all connections are secure.

5. Vacuum Hoses and Fuel Pressure

• Inspect all vacuum hoses for cracks or disconnections. Replace any damaged hoses.
• Use a fuel pressure gauge to check fuel pressure against specifications (usually around 50-60 psi for the Golf). Replace the fuel pump or filter if pressure is low.