why is my Toyota Tacoma N300 (2016-Present) engine making a ticking noise

Solution

1. Preparation

• Tools Required: OBD-II scanner, mechanic's stethoscope, socket set, torque wrench, oil pressure gauge, valve cover gasket (if resealing is needed).
• Disconnect the battery to ensure safety while working on the engine.

2. Change Engine Oil and Filter

• Sub-steps:
  1. Raise the vehicle and secure it on jack stands.
  2. Place an oil drain pan under the oil pan and remove the drain plug to drain the old oil completely.
  3. Replace the oil filter using an oil filter wrench.
  4. Reinstall the drain plug and torque to the specified value (typically around 20-25 ft-lbs).
  5. Fill the engine with the recommended type and amount of oil (usually 0W-20 or 5W-20 depending on specifications).

3. Adjust Valve Clearance

• Sub-steps:
  1. Remove the valve cover by unbolting it and carefully lifting it off.
  2. Using a feeler gauge, measure the clearance between the rocker arm and valve stem.
  3. If clearance is out of specification, adjust by replacing shims or adjusting the rocker arms as necessary.
  4. Reinstall the valve cover with a new gasket, ensuring proper torque on all bolts.

4. Inspect and Replace Lifters (if necessary)

• Sub-steps:
  1. If the ticking persists after oil change and valve adjustment, inspect the lifters.
  2. Remove the intake manifold to access the lifters.
  3. Replace any faulty lifters with new ones, ensuring they are seated properly.
  4. Reassemble the intake manifold and torque to manufacturer specifications.