During a smog check, what is the technician obligated to do upon discovering any visible smoke?

When a technician discovers visible smoke during a smog check, the correct course of action is to document and report the finding. The presence of visible smoke can indicate underlying issues with the vehicle's emissions system, which may affect compliance with emissions standards.

By documenting the smoke observed, the technician creates a formal record of the condition that can be referenced later, ensuring transparency and accountability in the inspection process. Reporting these findings is critical, as it informs the vehicle owner about potential problems that may not only affect the vehicle's emissions but could also lead to further mechanical issues or increased pollution. This approach aligns with the regulations governing smog checks, emphasizing the importance of thorough and accurate inspections.

While notifying the vehicle owner is also important, it is part of the broader requirement to document any issues found during the inspection, making the documentation and reporting of findings a more comprehensive obligation.