Smog Check Inspector Level 1 | 2026 UPDATE MOST
TESTED QUESTIONS WITH VERIFIED ANSWERS
GRADEDA+ | ASSURED SUCCESS
1. How frequently should the EP machines be calibrated and safety tested?
Once a year
Every 6 months
Once every two years
Only when there is a problem
2. What type of vehicles is the Bureau of Automotive Repair's snap throttle
visible smoke test performed on?
Hybrid vehicles
Diesel vehicles
Gasoline vehicles
Electric vehicles
3. Describe the criteria that determine whether a hybrid vehicle is tested on the
EIS machine in California.
Testing is only required for hybrid vehicles that have failed previous
inspections.
Hybrid vehicles are only tested if they are over a certain age.
All hybrid vehicles are tested regardless of their emissions levels.
Hybrid vehicles are tested based on specific criteria set by the
state, which may include the vehicle's registration area.
,4. If a smog inspector encounters a vehicle with a GVWR over 14,000 lbs, what
specific inspection protocol should they follow?
Follow the heavy-duty vehicle inspection protocol.
Skip the emissions test and only check the vehicle's safety features.
Perform a visual inspection without emissions testing.
Conduct a standard emissions test as for light-duty vehicles.
5. If a vehicle's drive axle weight exceeds the maximum limit during an ASM test,
what should the inspector do?
The inspector should ignore the weight and focus on emissions.
The inspector should halt the test and document the weight
violation.
The inspector should adjust the weight to meet the limit.
The inspector can proceed with the test regardless of the weight.
6. What does the EVAP system primarily aim to reduce in vehicle emissions?
Nitrogen oxides
Carbon monoxide
Hydrocarbon emissions
Particulate matter
7. What is the name of the device that directs air from an Air Injection Reaction
(AIR) system?
Air Pump
Oxygen Sensor
, EGR Valve
Catalytic Converter
8. What is the primary purpose of the diesel BAR snap visible smoke test?
To assess the overall performance of diesel vehicles.
To measure the opacity of exhaust emissions from diesel vehicles.
To evaluate the noise levels of diesel engines.
To check the fuel efficiency of diesel engines.
9. If a technician finds a crushed EGR valve during an inspection, what steps
should they take to ensure compliance with emissions regulations?
Advise the owner to drive the vehicle without repairs.
Document the damage and recommend repair or replacement of
the EGR valve.
Ignore the damage if the vehicle passes other tests.
Replace the EGR valve without documenting the issue.
10. How often must you inspect your car (if it is not brand new)?
Every year
Every decade
every 2 years
Every month
11. The PCV system controls which exhaust emissions?
NOx
, both HC and CO
HC
CO
12. If a gasoline vehicle from 1975 is brought in for inspection, what would be
the appropriate action according to California's Smog Check program?
The vehicle would automatically pass the inspection.
The vehicle would not be subject to the Smog Check program.
The vehicle would require a special exemption for testing.
The vehicle would need to be inspected for emissions compliance.
13. Describe the implications of a Canadian underhood label on the smog
inspection process.
A Canadian underhood label indicates that the vehicle may not
meet California emissions standards, requiring special procedures.
A Canadian underhood label means the vehicle is exempt from
testing.
A Canadian underhood label guarantees compliance with California
regulations.
A Canadian underhood label has no impact on the inspection
process.
14. What is the most important procedure To follow when performing a
functional test on an EGR system?
Apply vacuum to the valve and observe if the RPM drop or engine
stall
Follow the manufacturer procedures
TESTED QUESTIONS WITH VERIFIED ANSWERS
GRADEDA+ | ASSURED SUCCESS
1. How frequently should the EP machines be calibrated and safety tested?
Once a year
Every 6 months
Once every two years
Only when there is a problem
2. What type of vehicles is the Bureau of Automotive Repair's snap throttle
visible smoke test performed on?
Hybrid vehicles
Diesel vehicles
Gasoline vehicles
Electric vehicles
3. Describe the criteria that determine whether a hybrid vehicle is tested on the
EIS machine in California.
Testing is only required for hybrid vehicles that have failed previous
inspections.
Hybrid vehicles are only tested if they are over a certain age.
All hybrid vehicles are tested regardless of their emissions levels.
Hybrid vehicles are tested based on specific criteria set by the
state, which may include the vehicle's registration area.
,4. If a smog inspector encounters a vehicle with a GVWR over 14,000 lbs, what
specific inspection protocol should they follow?
Follow the heavy-duty vehicle inspection protocol.
Skip the emissions test and only check the vehicle's safety features.
Perform a visual inspection without emissions testing.
Conduct a standard emissions test as for light-duty vehicles.
5. If a vehicle's drive axle weight exceeds the maximum limit during an ASM test,
what should the inspector do?
The inspector should ignore the weight and focus on emissions.
The inspector should halt the test and document the weight
violation.
The inspector should adjust the weight to meet the limit.
The inspector can proceed with the test regardless of the weight.
6. What does the EVAP system primarily aim to reduce in vehicle emissions?
Nitrogen oxides
Carbon monoxide
Hydrocarbon emissions
Particulate matter
7. What is the name of the device that directs air from an Air Injection Reaction
(AIR) system?
Air Pump
Oxygen Sensor
, EGR Valve
Catalytic Converter
8. What is the primary purpose of the diesel BAR snap visible smoke test?
To assess the overall performance of diesel vehicles.
To measure the opacity of exhaust emissions from diesel vehicles.
To evaluate the noise levels of diesel engines.
To check the fuel efficiency of diesel engines.
9. If a technician finds a crushed EGR valve during an inspection, what steps
should they take to ensure compliance with emissions regulations?
Advise the owner to drive the vehicle without repairs.
Document the damage and recommend repair or replacement of
the EGR valve.
Ignore the damage if the vehicle passes other tests.
Replace the EGR valve without documenting the issue.
10. How often must you inspect your car (if it is not brand new)?
Every year
Every decade
every 2 years
Every month
11. The PCV system controls which exhaust emissions?
NOx
, both HC and CO
HC
CO
12. If a gasoline vehicle from 1975 is brought in for inspection, what would be
the appropriate action according to California's Smog Check program?
The vehicle would automatically pass the inspection.
The vehicle would not be subject to the Smog Check program.
The vehicle would require a special exemption for testing.
The vehicle would need to be inspected for emissions compliance.
13. Describe the implications of a Canadian underhood label on the smog
inspection process.
A Canadian underhood label indicates that the vehicle may not
meet California emissions standards, requiring special procedures.
A Canadian underhood label means the vehicle is exempt from
testing.
A Canadian underhood label guarantees compliance with California
regulations.
A Canadian underhood label has no impact on the inspection
process.
14. What is the most important procedure To follow when performing a
functional test on an EGR system?
Apply vacuum to the valve and observe if the RPM drop or engine
stall
Follow the manufacturer procedures
