my BMW 3 Series F30/F31 (2012-2019) engine makes a ticking noise, what’s wrong?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the engine is cool before starting work.
• Disconnect the battery to avoid any electrical issues during repair.

2. Change Engine Oil

• Sub-steps:
  1. Raise the vehicle using a hydraulic lift or jack stands.
  2. Remove the oil drain plug and let the old oil drain completely into a suitable container.
  3. Replace the oil filter using an oil filter wrench.
  4. Reinstall the oil drain plug, tightening it to the manufacturer's torque specifications (typically around 25 Nm).
  5. Fill the engine with new oil (consult owner’s manual for the correct oil type and capacity).

3. Inspect and Replace Valvetrain Components

• Sub-steps:
  1. Remove the engine cover by unscrewing the bolts or clips that hold it in place.
  2. Visually inspect the rocker arms, lifters, and pushrods for wear or damage.
  3. If necessary, replace any worn components with OEM parts, ensuring proper installation.
  4. Reinstall the engine cover and secure it with bolts to the specified torque.

4. Timing Chain/Belt Inspection and Replacement (if necessary)

• Sub-steps:
  1. Remove any components obstructing access to the timing chain/belt cover.
  2. Inspect the tensioner and guides for wear; replace if necessary.
  3. If the timing chain/belt is worn or damaged, follow the manufacturer's guidelines for replacement, ensuring correct timing alignment.