Which of the following does NOT need to be part of a Smog Check Inspection on a 2000 and newer model vehicle?

In a Smog Check Inspection for vehicles from the year 2000 and newer, the fuel cap pressure test is not a mandatory part of the inspection process. This particular test is typically associated with checking the integrity of the vehicle's evaporative emissions system, which helps prevent fuel vapors from escaping into the atmosphere. While a malfunctioning fuel cap can contribute to increased emissions and may fail an inspection if there are signs of an issue, it is not required as a specific test for all vehicles.

On the other hand, checks for visible smoke, liquid fuel leaks, and the Malfunction Indicator Lamp (MIL) are all essential parts of the emission inspection process. Visible smoke can indicate excessive emissions, liquid fuel leaks can present a direct environmental hazard, and the MIL helps identify any issues with the vehicle's emissions control systems by indicating if there are any diagnostic trouble codes stored. Collectively, these components help ensure that vehicles comply with emissions standards and operate more cleanly.