why is my Volkswagen Golf MK7 (2015-2019) using so much fuel?

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and turn off the ignition.
• Disconnect the battery to prevent electrical issues.

2. Replace Air Filter

• Sub-steps:
  1. Locate the air filter housing; typically found near the engine bay.
  2. Unclip or unscrew the housing cover and remove it.
  3. Extract the old air filter and inspect the housing for debris.
  4. Install the new air filter, ensuring it's seated properly.
  5. Reattach the housing cover securely.

3. Clean Throttle Body

• Sub-steps:
  1. Remove the air intake duct connected to the throttle body.
  2. Use throttle body cleaner and a soft cloth to clean the throttle plate and surrounding areas.
  3. Reattach the air intake duct, ensuring a tight seal.

4. Inspect and Clean Fuel Injectors

• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Disconnect the fuel lines carefully; use rags to catch any fuel spills.
  3. Remove the fuel injectors using a socket set.
  4. Clean the injectors with an appropriate solvent or replace if necessary.
  5. Reinstall the injectors and reconnect the fuel lines.

5. Check and Adjust Tire Pressure

• Sub-steps:
  1. Use a tire pressure gauge to check the pressure of all tires.
  2. Inflate tires to the manufacturer’s recommended pressure (found in the owner’s manual or on a sticker inside the driver’s door).
  3. Inspect tires for excessive wear or damage.

Tools Required:

• OBD-II scanner
• Tire pressure gauge
• Socket set
• Throttle body cleaner
• Fuel pressure gauge
• Rags

Parts Required:

• Air filter
• Fuel injectors (if cleaning is not sufficient)

Estimated Repair Time: 2-4 hours

Safety Warnings:

• Disconnect the battery before working on electrical systems.
• Allow the engine to cool before working in the engine bay.