The third of the three vital parts of the California Smog Check. This is where the emissions analyzer tests actual emissions from your vehicle, as measured at the tailpipe. Only the emissions test can label a car a Gross Polluter. Emissions measured include Carbon Monoxide (CO), Carbon Dioxide
Thursday Term Day: OBD
On-Board Diagnostics (OBD) is a term used to describe a vehicle’s computer system that controls the emission control, along with many other features. This system includes self-diagnostic and reporting functions. Most 1996 and newer vehicles less than 14,000 pounds gross vehicle weight rating (GVWR)
Smog Procedure Timing Check
Ignition Timing: The timing of the spark relative to the operation of the valves and the placement of the piston in the cylinder. BTDC stands for "before top dead center" a reference to a mark on the main pulley on the front of the engine. For most engines, when the timing is set to 0 degrees TDC,
28 May, 2014 05:56
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