Question

A vehicle originally equipped with an Exhaust Gas Recirculation (EGR) system arrives at an emissions inspection station for a PA Emissions Inspection. Two inspectors are discussing how to perform the visual inspection of the EGR system.

Inspector "A" says: "Check to see if the EGR components exist, appears to be properly connected, and appears to be the correct type for the vehicle."

Inspector "B" says: "Check to see if the EGR components exist, is properly connected, and is functioning correctly based on manufacturer specifications."

Who is right?

Answer 1

Inspector B is correct. When performing a visual inspection of an Exhaust Gas Recirculation (EGR) system, it is important to not only check if the components exist and are properly connected, but also to ensure that the system is functioning correctly based on manufacturer specifications.

Step-by-step explanation:

Inspector B is correct. When performing a visual inspection of an Exhaust Gas Recirculation (EGR) system, it is important to not only check if the components exist and are properly connected, but also to ensure that the system is functioning correctly based on manufacturer specifications.

The EGR system is designed to reduce nitrogen oxide (NOx) emissions by recirculating a portion of the exhaust gases back into the combustion chamber. If the EGR system is not functioning correctly, it may lead to increased emissions and potentially cause the vehicle to fail an emissions inspection.

To determine if the EGR system is functioning correctly, the inspector should refer to the manufacturer's specifications for the vehicle. These specifications will outline the required operating conditions for the EGR system, such as the flow rate and the functioning of any valves or sensors..