Smog problems

Has the emissions or ignition system been maintained and inspected for any issues? Warning lights on? If so, diagnosis of problems or failures been performed? I could go on and on

What Indeboss said... ...and... What kind of driving do you do? If you never drive at a sustained highway speed for any period of time, it will indeed take over a month to clear. Also, maintain your fuel level above 1/4 tank and below 3/4 tank for optimum effect to get monitors to set. Which monitors have not set per test equipment?