Texas State Inspection Practice

What must be inspected to ensure emissions compliance in vehicles with a catalytic converter?

1. Proper function and no removal or tampering

2. Visual appearance of the catalytic converter

3. Installation of a new catalytic converter

4. Fuel efficiency of the vehicle

The correct answer is: Proper function and no removal or tampering

To ensure emissions compliance in vehicles equipped with a catalytic converter, it is essential to assess the proper function of the catalytic converter while ensuring that it has not been removed or tampered with. The catalytic converter plays a vital role in reducing harmful emissions before they are released into the atmosphere. Its effectiveness hinges on its intact condition and proper operation. Any removal or tampering can significantly diminish its ability to process exhaust gases properly, thus leading to increased emissions that violate environmental regulations. Therefore, the focus during the inspection should be on confirming that the catalytic converter is functioning as intended and is in its original, unaltered state. The visual appearance of the catalytic converter, the installation of a new catalytic converter, and even the fuel efficiency of the vehicle, while related to emissions indirectly, do not provide a comprehensive understanding of compliance. They may not necessarily indicate whether the catalytic converter itself is performing properly or is free from modifications that could compromise emissions control.