You may apply for an exemption at a California smog check referee station. Please call (800) 622-7733 and ask to be transferred to a local referee smog station. They are usually located at community colleges which offer automotive training.
The smog referee will attempt to conduct the inspection him or herself. If they are unable to complete the EVAP portion of the inspection, and it not be due to any failure or fault your vehicle suffered since it's original state, they may manually bypass the EVAP portion of the smog inspection and make a notation in the Bureau of Automotive Repairs vehicle testability log as a potential problem for future vehicle owners. The referee office has an obligation to assist California vehicle owners whose vehicles have difficulty passing the smog check due to irregular emission control component configurations. They'll be able to get this problem solved for you.
posted by SmogTips Support 05-24-2017 03:59 PM