The Diesel Smog Check inspection will consist of three parts; Visual check of the emission control equipment (The visual check of diesel vehicles will be performed the same way as the test performed on gasoline powered vehicles except that the emission control components maybe different.) Check of the OBD system (The OBD-II check on diesels will be conducted the same way it is performed on gasoline vehicles.) Test for visible smoke (The visible smoke test procedures for diesels is similar to the gasoline procedure.)
No, dynamometer testing will not be part of the diesel Smog Check inspection.
No. Although some diesel vehicles owners use alternative diesel fuels, including various mixes of biodiesel, currently, there are no plans to require technicians to collect fuel samples as part of the diesel Smog Check inspection. If a vehicle has equipment that modifies the fuel injection system, then the system must have an ARB approved Executive Order (EO). Extra fuel tanks without evaporative controls are not a cause for a Smog Check failure.
Although many factors affect the length of time it takes to do any type of inspection, the BAR expects most technicians to be able to complete the diesel inspection in approximately 15-30 minutes.