my Volkswagen Golf MK7 (2015-2019) is burning rich what are the symptoms

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety.
• Allow the engine to cool before working on it.

2. Replace Air Filter

• Remove the air filter housing cover using a socket set.
• Replace the old air filter with a new one, ensuring proper alignment.
• Reattach the air filter housing cover securely.

3. Clean or Replace MAF Sensor

• Locate the mass airflow sensor in the intake duct.
• Disconnect the electrical connector and remove the sensor with a Torx screwdriver.
• Clean the MAF sensor using MAF cleaner; if severely damaged, replace it.
• Reinstall the MAF sensor and reconnect the electrical connector.

4. Inspect and Replace Oxygen Sensors

• Locate the upstream and downstream oxygen sensors in the exhaust system.
• Disconnect the electrical connectors and remove the sensors using an O2 sensor socket.
• Install new oxygen sensors, ensuring the threads are clean and properly torqued to manufacturer specifications.
• Reconnect electrical connectors.

5. Check Fuel Injectors

• Use a multimeter to test the electrical resistance of each injector.
• Remove and clean the injectors or replace them if they are found to be faulty.
• Reinstall injectors ensuring proper seating and connection.

6. Final Assembly

• Reconnect the battery.
• Start the engine and allow it to reach operating temperature.
• Monitor for any abnormal symptoms.