Smog Check Inspector Level 1 Exam
Questions & Answers
Question 1
What model year gasolines vehicles are subject to Californias Smog Check program
Correct Answer
1976 thru current model year
Question 2
a vehicle is in for a smog inspection. it has two tailpipes showing from the rear of the
vehicle. upon closer inspection you notice the vehicle has a V style engine with two
exhaust manifolds. the exhaust system has two catalytic converters and two mufflers.
it has no bend pipe between the catalytic converters and the mufflers joining the two
exhaust systems together. how would this vehicle get entered into the EIS machine
Correct Answer
dual exhuast
Question 3
during a smog check inspection on a diesel powered vehicle the smog check
inspector finds and aftermarket EGR Cooler. How should he or she proceed
Correct Answer
Verify if the replacement EGR cooler is an approved part first
Question 4
the vacuum line leading to the EGR valve has been rubbing on the intake manifold.
The hose has a small leak in it as a result. how would the smog check inspector enter
this into thee is machine
Correct Answer
defective for EGR
Page 1 of 26
,Question 5
what is the maximum drive axle weight allowed during an ASM test
Correct Answer
5000 lbs
Question 6
During the smog check inspection on a 2005 gasoline hybrid vehicle Technician A says
the visible idle smoke checks can be performed at any time during a test. Technician B
says the visible idle smoke checks must be performed after the OBD2 portion of the
test. Who is correct
Correct Answer
Neither technician A or B
Question 7
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?
Correct Answer
3+/- degrees and between 100 +/- RPM
Question 8
what emissions would a vehicle most likely fail for due to a lack of flow in the cooling
system (radiator)?
Correct Answer
NOx
Question 9
How often should a gas calibration be performed on the EIS Machine
Correct Answer
Every 72 hours
Page 2 of 26
, Question 10
during a smog inspection an aftermarket catalytic converter is found installed 8 inches
behind the original catalytic converters heat shield. technician A and B both say it will
pass. Who is right?
Correct Answer
Neither A or B
Question 11
The Bureau of Automotive Repairs snap throttle visible smoke test is performed on
Correct Answer
all vehicles 1976 and newer
Question 12
Of the four strokes of an internal combustion engine the ignition typically fires during
the Power stroke. True or False
Correct Answer
False, compression stroke
Question 13
a vehicle has no under hood label after looking up the vehicle in the ECS guide it is
determined the both federal and California vehicles have the same emissions
equipment how should the smog check inspector proceed
Correct Answer
enter the vehicle as a California vehicle
Question 14
What emissions does a TWC reduce
Correct Answer
H/C, CO, and NOx
Page 3 of 26
Questions & Answers
Question 1
What model year gasolines vehicles are subject to Californias Smog Check program
Correct Answer
1976 thru current model year
Question 2
a vehicle is in for a smog inspection. it has two tailpipes showing from the rear of the
vehicle. upon closer inspection you notice the vehicle has a V style engine with two
exhaust manifolds. the exhaust system has two catalytic converters and two mufflers.
it has no bend pipe between the catalytic converters and the mufflers joining the two
exhaust systems together. how would this vehicle get entered into the EIS machine
Correct Answer
dual exhuast
Question 3
during a smog check inspection on a diesel powered vehicle the smog check
inspector finds and aftermarket EGR Cooler. How should he or she proceed
Correct Answer
Verify if the replacement EGR cooler is an approved part first
Question 4
the vacuum line leading to the EGR valve has been rubbing on the intake manifold.
The hose has a small leak in it as a result. how would the smog check inspector enter
this into thee is machine
Correct Answer
defective for EGR
Page 1 of 26
,Question 5
what is the maximum drive axle weight allowed during an ASM test
Correct Answer
5000 lbs
Question 6
During the smog check inspection on a 2005 gasoline hybrid vehicle Technician A says
the visible idle smoke checks can be performed at any time during a test. Technician B
says the visible idle smoke checks must be performed after the OBD2 portion of the
test. Who is correct
Correct Answer
Neither technician A or B
Question 7
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?
Correct Answer
3+/- degrees and between 100 +/- RPM
Question 8
what emissions would a vehicle most likely fail for due to a lack of flow in the cooling
system (radiator)?
Correct Answer
NOx
Question 9
How often should a gas calibration be performed on the EIS Machine
Correct Answer
Every 72 hours
Page 2 of 26
, Question 10
during a smog inspection an aftermarket catalytic converter is found installed 8 inches
behind the original catalytic converters heat shield. technician A and B both say it will
pass. Who is right?
Correct Answer
Neither A or B
Question 11
The Bureau of Automotive Repairs snap throttle visible smoke test is performed on
Correct Answer
all vehicles 1976 and newer
Question 12
Of the four strokes of an internal combustion engine the ignition typically fires during
the Power stroke. True or False
Correct Answer
False, compression stroke
Question 13
a vehicle has no under hood label after looking up the vehicle in the ECS guide it is
determined the both federal and California vehicles have the same emissions
equipment how should the smog check inspector proceed
Correct Answer
enter the vehicle as a California vehicle
Question 14
What emissions does a TWC reduce
Correct Answer
H/C, CO, and NOx
Page 3 of 26
