Smog Check Inspector Level 1 Exam (Latest Update 2026 / 2027) | Questions and Verified Answers | Grade A | 100 % Correct

Smog Check Inspector Level 1 Exam
(Latest Update ) |
Questions and Verified Answers |
Grade A | 100 % Correct


Question:
During the visual portion of an OBD II smog check inspection the smog
check inspector sees an aftermarket catalytic converter installed. How should
he or she proceed?


a. fail the vehicle as modified under catalytic converter
b. pass the vehicle because the catalytic converter is there
c. research the new catalytic converter and proceed accordingly
d. abort the test and refer the customer to the referee
Answer:
research the new catalytic converter and proceed accordingly

,Question:
What emission(s) does a TWC reduce?


a. H/C, CO & Nitrogen
b. H/C, CO & H2O
c. H/C, CO & CO2
d. H/C, CO & NOx
Answer:
HC, CO and NOx




Question:
What portion(s) of a smog check inspection are performed with the engine
Running/Ready mode on a hybrid vehicle?


a. visible smoke checks (idle tail pipe & BAR snap test)
b. liquid fuel leak check
c. ignition timing check
d. all of the above
Answer:
liquid fuel leak check

, Question:
What emission(s) would a vehicle most likely fail for due to a lack of flow in
the cooling system (radiator)?


a. NOx
b. H/C
c. CO
d. all of the above
Answer:
NOx




Question:
During a smog check inspection on a 1999 Ford F250 Diesel truck the smog
check inspector sees the GVWR on the drivers door label as 14,050 lbs. How
should he or she proceed?


a. test the vehicle on OIS as its Diesel vehicle
b. refuse the vehicle as it doesn't need to be tested
c. test the vehicle on EIS as it's a Diesel vehicle
d. refer the customer to the dealership for testing
Answer:
refuse the vehicle as it doesnt need to be tested