why is my Toyota Highlander Third Generation (2014-2019) making a loud exhaust noise

Solution

1. Preparation

• Gather tools and parts needed.
• Park the vehicle on a level surface and set the parking brake.
• Wear safety goggles and gloves for protection.

Tools Required:

• Socket set
• Torque wrench
• OBD-II scanner
• Screwdriver set
• Safety goggles and gloves

2. Inspect and Repair Exhaust Components

A. Visual Inspection

• Check the entire length of the exhaust system from the manifold to the tailpipe for any visible damage or rust.
• Pay close attention to the joints and connections.

B. Tighten Loose Components

• Using the socket set, check and tighten any loose bolts or clamps on the exhaust system.

C. Replace Damaged Parts

• If any parts such as the exhaust manifold, gaskets, or muffler are damaged:
  1. Remove the damaged component by undoing the bolts with the socket set.
  2. Clean the mating surfaces of any debris or old gasket material.
  3. Install the new component, ensuring proper alignment.
  4. Torque bolts to the manufacturer-recommended specifications.

3. Test for Exhaust Leaks

• After repairs, start the engine and allow it to idle.
• Listen for any remaining abnormal sounds and check for leaks by observing the exhaust system for any smoke or hissing sounds.