If you go to DEQ for testing the best times are mid morning or mid afternoon. That is when the lines are shortest. On cars 1996 or newer don’t go if your check engine light is on, it is an automatic fail condition. Call me at the shop (503-357-4123) and we will set up a time to diagnose the problem. Often it is a simple problem to fix and will save time by not having to go more than one time to DEQ.
