An AIR system should be checked for overall efficiency by looking at the changes in exhaust quality when the system is turned on and off.

Question

Quizplus · Accepted Answer

The AIR (Secondary Air Injection) system's purpose is to help reduce exhaust emissions by injecting fresh air into the exhaust stream, which helps in the further oxidation of exhaust gases. Therefore, checking the changes in exhaust quality when the system is turned on and off is a valid method to assess its overall efficiency.

An AIR System Should Be Checked for Overall Efficiency by Looking