why does my Volkswagen Passat B8 (2015-2022) make a knocking noise when accelerating?

Solution

1. Preparation

• Gather necessary tools and parts for the repair.
• Ensure the vehicle is parked on a level surface and the engine is turned off.
• Disconnect the battery to avoid electrical hazards.

2. Inspect and Replace Engine/Transmission Mounts

• Sub-steps:
  • Raise the vehicle using a hydraulic jack and secure it with jack stands.
  • Visually inspect the engine and transmission mounts for cracks or deterioration.
  • If mounts are damaged, remove the bolts securing the mounts using a socket set.
  • Replace with new mounts, ensuring they are correctly aligned.
  • Torque bolts to the manufacturer’s specifications.

3. Check and Replace CV Joints/Axles

• Sub-steps:
  • Lift the vehicle and remove the front wheels for better access.
  • Inspect the CV joints and axles for any signs of grease leakage or wear.
  • If damaged, remove the axle nut using a socket set and pull the axle out of the hub.
  • Replace with a new axle assembly, ensuring proper insertion into the differential.
  • Reinstall the axle nut and torque to specifications.

4. Inspect and Replace Ignition Components

• Sub-steps:
  • Remove the engine cover (if applicable) to access the ignition system.
  • Check each spark plug for wear and replace if necessary using a spark plug socket.
  • Test ignition coils by removing them and testing with a multimeter.
  • Replace any faulty coils and reassemble the ignition system.