EMISSIONS TECH FINAL TEST EXAM
2026/2027 | PRACTICE QUESTIONS,
ANSWERS & STUDY GUIDE
The Salt Lake County Vehicle Emissions Inspection Program, implemented April
1st, 1981, operates under the direction of what entity? - correct answer-The Salt
Lake County Health Department.
If you receive a kit car or engine change vehicle for inspection, you can go ahead
and perform the inspection, no questions asked. - correct answer-false
Which of the following gas engine ECDs works by capturing gasoline vapors in a
charcoal canister, mixing them with fresh air, and sending them to the throttle
body or intake manifold to be burned with fuel in the combustion process? -
correct answer-Evaporative Emissions Control System (EVAP)
What diesel engine ECD works by injecting a liquid reducing agent (Diesel Exhaust
Fluid) from a separate tank, into the exhaust stream, after the exhaust passes
through the catalyst and Diesel Particulate Filter? - correct answer-Selective
Catalyst Reduction (SCR)/Selective Catalyst Reduction Catalyst (SCRC).
The four cycles, or strokes, of the four-stroke gasoline engine, in the order that
they occur, are: - correct answer-Intake, Compression, Power, and Exhaust.
, Which of the following gas engine ECDs works by recirculating exhaust gases back
to the combustion chamber to cool the combustion chamber, which decreases
the generation of NOx? - correct answer-Exhaust Gas Recirculation (EGR).
The Salt Lake County Vehicle Emissions Technical Center is operated by the Salt
Lake County Health Department Air Quality Bureau. Its functions include
educating and assisting the public with emissions-related issues, training
emissions technicians, and ensuring the emissions inspections are performed
correctly. - correct answer-true
All aspects of an official emissions inspection must be performed by certified
technicians, who have passed the Salt Lake County Pre-Qualifying Exam,
completed the SLCO training, and hold a current Certificate of Qualification. -
correct answer-true
Which of the following vehicles is exempt from emissions inspection in Salt Lake
County? - correct answer-A vehicle registered in a non-IM testing county.
The three types of emissions inspections performed on gasoline engine vehicles in
Salt Lake County are: - correct answer-Two Speed Idle (TSI), On Board Diagnostics
2 (OBDII), and Visual Inspection.
The Clean Air Act gives the Environmental Protection Agency the right and
responsibility to set National Ambient Air Quality Standards for pollutants
considered harmful. This helps the EPA fulfill its mission, which is: - correct
answer-To protect human health and the environment.
2026/2027 | PRACTICE QUESTIONS,
ANSWERS & STUDY GUIDE
The Salt Lake County Vehicle Emissions Inspection Program, implemented April
1st, 1981, operates under the direction of what entity? - correct answer-The Salt
Lake County Health Department.
If you receive a kit car or engine change vehicle for inspection, you can go ahead
and perform the inspection, no questions asked. - correct answer-false
Which of the following gas engine ECDs works by capturing gasoline vapors in a
charcoal canister, mixing them with fresh air, and sending them to the throttle
body or intake manifold to be burned with fuel in the combustion process? -
correct answer-Evaporative Emissions Control System (EVAP)
What diesel engine ECD works by injecting a liquid reducing agent (Diesel Exhaust
Fluid) from a separate tank, into the exhaust stream, after the exhaust passes
through the catalyst and Diesel Particulate Filter? - correct answer-Selective
Catalyst Reduction (SCR)/Selective Catalyst Reduction Catalyst (SCRC).
The four cycles, or strokes, of the four-stroke gasoline engine, in the order that
they occur, are: - correct answer-Intake, Compression, Power, and Exhaust.
, Which of the following gas engine ECDs works by recirculating exhaust gases back
to the combustion chamber to cool the combustion chamber, which decreases
the generation of NOx? - correct answer-Exhaust Gas Recirculation (EGR).
The Salt Lake County Vehicle Emissions Technical Center is operated by the Salt
Lake County Health Department Air Quality Bureau. Its functions include
educating and assisting the public with emissions-related issues, training
emissions technicians, and ensuring the emissions inspections are performed
correctly. - correct answer-true
All aspects of an official emissions inspection must be performed by certified
technicians, who have passed the Salt Lake County Pre-Qualifying Exam,
completed the SLCO training, and hold a current Certificate of Qualification. -
correct answer-true
Which of the following vehicles is exempt from emissions inspection in Salt Lake
County? - correct answer-A vehicle registered in a non-IM testing county.
The three types of emissions inspections performed on gasoline engine vehicles in
Salt Lake County are: - correct answer-Two Speed Idle (TSI), On Board Diagnostics
2 (OBDII), and Visual Inspection.
The Clean Air Act gives the Environmental Protection Agency the right and
responsibility to set National Ambient Air Quality Standards for pollutants
considered harmful. This helps the EPA fulfill its mission, which is: - correct
answer-To protect human health and the environment.
