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Smog Check Inspection Procedures: Visible Smoke Test Mobile App

The Smog Check Inspection Procedures: Visible Smoke Test mobile app makes it easy to conduct smog check tests with your smartphone or tablet. The smoke check inspections checklist can be used right at the smog check station during all vehicle inspections.

Smog inspection station inspectors can use the app to ensure that emission levels are at acceptable levels and that the vehicle has passed the smog testing process. Once the smog station has completed smog testing, the results can be signed off on by the inspection station representative and saved for the motor vehicle's record.

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Gasoline and diesel vehicles requiring a Smog Check inspection must be tested for visible smoke.
The Visible Smoke Test procedures for gasoline and diesel vehicles are in many ways similar, but ...
General Test Procedures:
Idle Test - Observe the tailpipe exhaust plume of the vehicle for 10 seconds.
Crankcase Test - Observe the engine crankcase for 10 seconds.
BAR Snap Test - Quickly push-and-release the accelerator pedal from idle position to between 2,00...
Enter the test result into the EIS.
Document any failure on the Vehicle Inspection Report and the consumer’s invoice.
Specific Test Procedures:
Step 1 - Vehicle Preparation
Check that there are no obvious safety hazards (abnormal engine noise, overheating, leaking fluid...
Place the transmission in “Neutral” or “Park,” with the parking brake on and/or wheel chocks in p...
Turn off all accessories (including air conditioning).
Ensure the vehicle is at normal operating temperature.
Position the vehicle to ensure there are no drafts that can disturb the exhaust plume.
Ensure there is nothing in the shop environment, such as equipment or tool boxes, which prevents ...
Step 2 - Test Preparation and Vehicle Familiarization
Use any means necessary to enable observation of the vehicle’s exhaust plume, including but not l...
Perform the first of three BAR Snap Tests:
Gasoline shall be performed prior to the ASM/TSI emissions portion of the inspection when the EIS...
Diesel shall be performed as part of Step 5 below, after the Crankcase Test.
Ensure the vehicle’s engine RPM falls between 2,000 and 3,000 while performing the BAR Snap Test.
Press-and-release the accelerator pedal more quickly or more slowly as needed to stay within the ...
Quickly press the pedal only part way to the floor before releasing it.
Do not check for smoke during the first BAR Snap Test.
Step 3 - Perform the Idle Test
Have the engine running at idle and go to the vehicle’s tailpipe.
Perform the Idle Test:
...and More!