Smog Check Inspector Level 1 Exam

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

Question:

What readings for timing would pass the vehicle if the under hood label states that the timing spec is 10 degrees BTDC at 750 RPM?

Answer:

3+/- degrees and between 100 +/- RPM

Question:

An AIR system (pump style) has the ability to change where the air from the pump is delivered to. the device for routing the air is called a?

Answer:

diverter valve

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Question:

What is the proper sequence for the four stroke of the internal combustion engine

Answer:

Intake, Compression, Power and Exhaust

Question:

Of the four strokes of an internal combustion engine the ignition typically fires during the Power stroke. True or False

Answer:

False, compression stroke

Question:

During the Visual portion of a smog check inspection the smog check inspector see an aftermarket catalytic converter installed. How should he proceed

Answer:

research the new catalytic converter and proceed accordingly

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Question:

What emissions does a TWC reduce

Answer:

H/C, CO, and NOx

Question:

what portions of a smog check inspection are performed with the engine running on a hybrid vehicle

Answer:

liquid fuel leak check

Question:

what emissions would a vehicle most likely fail for due to a lack of flow in the cooling system (radiator)?

Answer:

NOx

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