What is the recommended method for inspecting the exhaust system?

The recommended method for inspecting the exhaust system is to conduct a visual inspection while the vehicle is running. This approach allows the inspector to check for visible leaks, unusual rust, or other issues that may not be apparent when the vehicle is stationary. When the engine is running, exhaust gases flow through the system, which can reveal issues such as holes or cracks that might not show up during a stationary inspection. Additionally, inspecting the system while it is active allows for the detection of exhaust noise patterns that may indicate potential problems.

This method is crucial because certain components of the exhaust system, such as mufflers and catalytic converters, may only show signs of dysfunction when operational. Observing emissions and the behavior of exhaust parts under normal operating conditions enables a more thorough and accurate assessment of the exhaust system's integrity and functionality.