Posts

  • What is a Smog Test?

    Thursday 05 October 2017

    A smog test checks vehicles for excessive pollution, or that have a high potential to pollute, by analyzing their tailpipe emissions, their on board diagnostics systems and other non-monitored components.  Smog check tests vary by the type of vehicle as manufacturer’s build their emissions systems to fit specific vehicle designs. A smog test may include: Visual examination of emissions control systems and parts. Functional check of the on-board diagnostic system (OBDII), check engin... read more