Exam Guide 2025-2026 Exam for
Mechanical Engineering
Which four emissions control systems are visually inspected on gasoline-powered
vehicles but not on diesel-powered vehicles? - CORRECT ANSWER -Air injection;
Spark controls; TAC/ACL; EVAP
Inspectors must use all available information necessary to determine the vehicle's
emission control requirements, including but not limited to: - CORRECT ANSWER -
Underhood emission control label
Inspectors must use all available information necessary to determine the vehicle's
emission control requirements, including but not limited to: - CORRECT ANSWER -
Current emission control application guide
Inspectors must use all available information necessary to determine the vehicle's
emission control requirements, including but not limited to: - CORRECT ANSWER -
Emission control repair manuals
Inspectors must use all available information necessary to determine the vehicle's
emission control requirements, including but not limited to: - CORRECT ANSWER -
Emission component location guides
Inspectors must use all available information necessary to determine the vehicle's
emission control requirements, including but not limited to: - CORRECT ANSWER -
Manufacturer emission control recalls
, Inspectors must use all available information necessary to determine the vehicle's
emission control requirements, including but not limited to: - CORRECT ANSWER -
Vacuum hose routing diagrams
Inspectors must use all available information necessary to determine the vehicle's
emission control requirements, including but not limited to: - CORRECT ANSWER -
CARB aftermarket parts listings
Inspectors must use all available information necessary to determine the vehicle's
emission control requirements, including but not limited to: - CORRECT ANSWER -
Aftermarket parts labels
Inspectors must use all available information necessary to determine the vehicle's
emission control requirements, including but not limited to: - CORRECT ANSWER -
Any reliable vehicle manufacturer sources
Some diesel-powered vehicles are equipped with a second or additional emission
control label affixed to the... - CORRECT ANSWER -Engine
To pass the visual inspection, the required emissions control systems must be... -
CORRECT ANSWER -Complete and installed in accordance with the vehicle
manufacturer's original CA or Federal certified configuration, or with CARB
aftermarket configuration
What must the inspector do if a vehicle is equipped with parts that modify the original
emission control configuration? - CORRECT ANSWER -Verify whether those parts
are CARB approved or exempted