Evap test will only run if the tank is between 1/4 and 3/4. After cold start is best, some tests will only run once a drive cycle. A lot of tests need a steady throttle for an extended period of time, if you don't have a steady throttle foot it may take awhile for them to run. Concentrate on steady throttle cruising, between 45mph and 65mph mostly. Some tests also need an extended idle, like at a long light.