I live in California, my 1995 Toyota Corolla failed fuel EVAP Test-Why-Help? on 1995 Toyota Corolla

My car failed the California SMOG TEST-it stated that my car failed the Fuel EVAP Test (Gross Leak)?? What does this mean?, and what should I do to correct it so that my car can pass SMOG TEST??? I really appreciate any help or information you could offer. Thank you very much.

Asked by for the 1995 Toyota Corolla
those cars i think have leaky filler pipes and give the evap system codes