What method can be used to detect leaks in the exhaust system?

Using a smoke test is an effective method for detecting leaks in the exhaust system. This technique involves introducing smoke into the exhaust system and observing for any escaping smoke. A leak will allow smoke to escape, making it visually identifiable, which enables technicians to pinpoint the exact location of the leak. This method is particularly valuable because it can reveal small or hard-to-detect leaks that might not be audible to the ear or visible through other means.

Smoke testing is preferred for its ability to provide immediate and clear results, making it a common practice during exhaust system diagnostics. Other methods, while they have their own uses, may not offer the same level of precision and effectiveness in detecting minor exhaust leaks.