Stricter emission guidelines are leading to an increase in EVAP-related check engine lights and service opportunities.

Rich Sommerville is the chairman of the committee created by the California Legislature to monitor the effectiveness of California’s smog-check program and to recommend to the Air Resources Board and ...

This is a preview. Log in through your library . Abstract Evaporative hydrocarbon emissions from gasoline-powered vehicles continue to be a major concern in areas where the national ambient air ...