SMOG CLASS SKILL QUESTIONS AND
AND ANSWERS WITH COMPLETE
SOLUTIONS ALREADY PASSED!!!
Handling Sample Dilution
If an inspector must abort a smog check due to sample dilution, what should
be done next?
D) Check for restrictions in the exhaust system. Sample dilution occurs
when excess ambient air is pulled into the exhaust stream, skewing the
accuracy of the tailpipe reading. Checking for restrictions, leaks, or missing
components (like the muffler or catalytic converter) is critical, as these
defects allow air to enter the system.
Handling Active Fuel Leaks
If an inspector discovers a fuel injection hose leaking gasoline onto the
exhaust system during an inspection, how should they proceed?
A) Abort the Smog inspection due to safety concerns. Liquid fuel leaking
onto a hot exhaust system poses an immediate fire hazard. Safety is the
priority; the technician must stop the testing process immediately, inform the
customer of the dangerous condition, and document the situation as an
"abort" for safety.
During a visual inspection of a vehicle exhausts system and inspector notes an
aftermarket catalytic converter has been installed. The converter is not lined up
with the underbody converter heat shields by 8 inches. How should the inspector
proceed -ANSWER ✔✔A) Refer the customer to Referee for certification
B) Fail the vehicle for having modified catalytic converter C) Pass the vehicle and
note the new catalytic converter
location
D) Pass the vehicle if the catalytic converter is approved for the
, vehicle
Which of the following functional tests is required while performing a smog
inspection on a 2000 model year hybrid vehicle -ANSWER ✔✔A) EGR test
B) MIL test
C) LPFET test
D) Visible smoke test
During an LPFET test the inspector finds that a fuel tank filler neck is not
compatible with available adapters How should the inspector proceed -ANSWER
✔✔A) Modify an existing fuel tank cap to allow testing
B)Enter "N" for Not Applicable in the inspection system
C)Inform the customer that a compatible filler neck should be installed
D) Inform the customer that the vehicle is eligible for smog inspection exemption
What action should an inspector take before performing the ASM test on a vehicle
with traction control? -ANSWER ✔✔A) Enable the traction control when
applicable
B)Disable the traction control when applicable
C)Inform the customer that the vehicle is exempt
D)Test the vehicle on a four wheel drive Dyno
An Inspector is performing a TSI emissions test on a vehicle. After the 2,500 RPM
portion of the test, the vehicle is idling out of range.
How Should the inspector proceed? -ANSWER ✔✔A)Manually adjust idle to
specifications and continue with inspection
B) Abort the test and refer the customer to referee for inspection
AND ANSWERS WITH COMPLETE
SOLUTIONS ALREADY PASSED!!!
Handling Sample Dilution
If an inspector must abort a smog check due to sample dilution, what should
be done next?
D) Check for restrictions in the exhaust system. Sample dilution occurs
when excess ambient air is pulled into the exhaust stream, skewing the
accuracy of the tailpipe reading. Checking for restrictions, leaks, or missing
components (like the muffler or catalytic converter) is critical, as these
defects allow air to enter the system.
Handling Active Fuel Leaks
If an inspector discovers a fuel injection hose leaking gasoline onto the
exhaust system during an inspection, how should they proceed?
A) Abort the Smog inspection due to safety concerns. Liquid fuel leaking
onto a hot exhaust system poses an immediate fire hazard. Safety is the
priority; the technician must stop the testing process immediately, inform the
customer of the dangerous condition, and document the situation as an
"abort" for safety.
During a visual inspection of a vehicle exhausts system and inspector notes an
aftermarket catalytic converter has been installed. The converter is not lined up
with the underbody converter heat shields by 8 inches. How should the inspector
proceed -ANSWER ✔✔A) Refer the customer to Referee for certification
B) Fail the vehicle for having modified catalytic converter C) Pass the vehicle and
note the new catalytic converter
location
D) Pass the vehicle if the catalytic converter is approved for the
, vehicle
Which of the following functional tests is required while performing a smog
inspection on a 2000 model year hybrid vehicle -ANSWER ✔✔A) EGR test
B) MIL test
C) LPFET test
D) Visible smoke test
During an LPFET test the inspector finds that a fuel tank filler neck is not
compatible with available adapters How should the inspector proceed -ANSWER
✔✔A) Modify an existing fuel tank cap to allow testing
B)Enter "N" for Not Applicable in the inspection system
C)Inform the customer that a compatible filler neck should be installed
D) Inform the customer that the vehicle is eligible for smog inspection exemption
What action should an inspector take before performing the ASM test on a vehicle
with traction control? -ANSWER ✔✔A) Enable the traction control when
applicable
B)Disable the traction control when applicable
C)Inform the customer that the vehicle is exempt
D)Test the vehicle on a four wheel drive Dyno
An Inspector is performing a TSI emissions test on a vehicle. After the 2,500 RPM
portion of the test, the vehicle is idling out of range.
How Should the inspector proceed? -ANSWER ✔✔A)Manually adjust idle to
specifications and continue with inspection
B) Abort the test and refer the customer to referee for inspection
