Starting August 1st, 2012, the BAR changed the smog technician licensing requirements to two separate licenses. There is a Smog "Inspector's" license and a Smog "Repair" Technician license. The following information is the list to meet the exam requirements for each license: Smog "Inspector's"
NOx Emissions
NOx Emissions (PPM): Oxides of nitrogen (more commonly called NOx) are odorless gases that help form smog, and give smog its characteristic brown color. NO is produced when temperatures in the combustion chambers exceed 2500 degrees Fahrenheit. Excessive engine temperatures could be caused by a lean