my Volkswagen Golf Eighth Generation (2020-present) feels sluggish, what could be causing it

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface with the engine off and cooled down.

2. Replace Air Filter

• Sub-steps:
  1. Open the hood and locate the air filter housing.
  2. Remove the clips or screws securing the housing cover.
  3. Take out the old air filter and inspect the housing for debris.
  4. Install the new air filter, ensuring it is seated properly.
  5. Reattach the housing cover and secure it.

3. Clean Throttle Body

• Tools Required: Throttle body cleaner, soft cloth.
• Sub-steps:
  1. Disconnect the battery to prevent accidental electrical shorts.
  2. Remove the intake duct connected to the throttle body.
  3. Spray throttle body cleaner inside the throttle body and wipe with a soft cloth until clean.
  4. Reinstall the intake duct and reconnect the battery.

4. Replace Spark Plugs

• Tools Required: Socket set, torque wrench.
• Sub-steps:
  1. Remove the ignition coil cover (if applicable).
  2. Disconnect the ignition coils from the spark plugs.
  3. Use a socket wrench to remove the old spark plugs.
  4. Check the gap on the new spark plugs and adjust as necessary.
  5. Install the new spark plugs and reconnect the ignition coils.
  6. Torque the spark plugs to the manufacturer’s specifications (usually around 15-20 lb-ft).

5. Check Fuel System Pressure

• Tools Required: Fuel pressure gauge.
• Sub-steps:
  1. Locate the fuel rail and connect the fuel pressure gauge.
  2. Turn the ignition to the "ON" position (without starting the engine) to check the pressure.
  3. Compare the reading with the manufacturer’s specifications.
  4. If pressure is low, investigate and replace the fuel pump or filter as needed.