Revised 2023 Updated Auto Final Exam
1. which part is the cylinder head bolted to?: the block
2. What is the ratio of coolant to water in a typical automotive cooling
system?: 50:50
3. Which material are new model cylinder heads made from?: aluminum
4. Who issues technical service bulletins?: manufacturers
5. If blue smoke is seen at the tailpipe when an engine is started,
which part(s) is/are most likely worn out?: valve stem seals
6. Technician A says a water pump controls the flow of coolant through
an engine. Technician B says an oil filter controls the flow of oil through
an engine. Who is right?: neither
7. Technician A says that all vehicles use the same oil viscosity.
Technician B says that using the wrong viscosity oil can damage an
engine. Which is right?: technician b
8. Where would an engine thermostat most likely be found?: at the engine
end of the upper radiator hose
9. If the coolant recovery tank has a hole in it, which is the proper fix?:
replace the tank
10.Which item is designed to keep engine valves closed?: spring/return
spring
11.When changing the engine oil, what should the temperature of the
engine be?: warm
12.What is the minimum recommended time to drain an oil filter
before discarding?: 12 hours minimum but usually 24 hours
13.What is a safety concern when servicing the internal combustion
engine of a hybrid vehicle?: High voltage/electrocution
14.Which is the necessary procedure when the heater core is
leaking coolant?: Remove and replace the heater core
15.Which part in the cooling system controls the flow of coolant?:
thermostat
16.A green liquid is found under the front of a vehicle. Which fluid is
most likely leaking?: antifreeze
17.When working on a hybrid vehicle, how many volts should the
1/9
,protective gloves be rated to handle?: 1000 volts
18.When a technician is changing the oil, what should remain on the
old filter?: Square seal stays on, round rubber seal comes off
2/9
, 19.Which part below keeps the engine from overheating?: water pump
20.How many vehicles have the same VIN?: none
21. Which engine part does the camshaft move to open cylinder valves?: -
lifters
22.Which manual has an area to write service history in it?: owner's
manual
23.Some radiators have two heat exchangers, one for the engine and one
for the:: transmission
24.What closes the valve in a cylinder head?: spring/return spring
25.Where should the technician find the oil change reset procedure for a
vehicle with an electronic oil change warning system?: owner's manual/
shop key
26.While driving down the highway, Mary notices a check engine light on
the dash. Which most likely caused the light to come on?: Bad/ faulty O2
sensor
27.Which part belongs inside a cylinder head?: valve stem seal
28.Which should be the last step in an engine oil change?: reset oil light
29.Why are radiator caps pressurized?: To raise boiling point of coolant
30.When a technician is pressurizing a cooling system, how much
pressure should be applied?: The amount stated on radiator cap
31.Which type of fluid most likely goes into a vehicle's engine?: 10w30
32.If the exhaust manifold on a vehicle is rusty, what should be done?:
noth- ing
33.If the check engine light is on for a vacuum leak, which type of
inspection would a technician perform first?: visual inspection
34.What color is associated with diesel exhaust fluid?: blue
35.Which part below is a component in the EVAP system?: fuel tank
36.Which name is commonly used when discussing diesel exhaust
fluid (DEF)?: AdBlue
37.A routine 5,000-mile-interval inspection includes checking the:: air filter
38.What is the most likely cause of a rattling sound coming from the
under- side of a vehicle?: loose exhaust heat shield
3/9
1. which part is the cylinder head bolted to?: the block
2. What is the ratio of coolant to water in a typical automotive cooling
system?: 50:50
3. Which material are new model cylinder heads made from?: aluminum
4. Who issues technical service bulletins?: manufacturers
5. If blue smoke is seen at the tailpipe when an engine is started,
which part(s) is/are most likely worn out?: valve stem seals
6. Technician A says a water pump controls the flow of coolant through
an engine. Technician B says an oil filter controls the flow of oil through
an engine. Who is right?: neither
7. Technician A says that all vehicles use the same oil viscosity.
Technician B says that using the wrong viscosity oil can damage an
engine. Which is right?: technician b
8. Where would an engine thermostat most likely be found?: at the engine
end of the upper radiator hose
9. If the coolant recovery tank has a hole in it, which is the proper fix?:
replace the tank
10.Which item is designed to keep engine valves closed?: spring/return
spring
11.When changing the engine oil, what should the temperature of the
engine be?: warm
12.What is the minimum recommended time to drain an oil filter
before discarding?: 12 hours minimum but usually 24 hours
13.What is a safety concern when servicing the internal combustion
engine of a hybrid vehicle?: High voltage/electrocution
14.Which is the necessary procedure when the heater core is
leaking coolant?: Remove and replace the heater core
15.Which part in the cooling system controls the flow of coolant?:
thermostat
16.A green liquid is found under the front of a vehicle. Which fluid is
most likely leaking?: antifreeze
17.When working on a hybrid vehicle, how many volts should the
1/9
,protective gloves be rated to handle?: 1000 volts
18.When a technician is changing the oil, what should remain on the
old filter?: Square seal stays on, round rubber seal comes off
2/9
, 19.Which part below keeps the engine from overheating?: water pump
20.How many vehicles have the same VIN?: none
21. Which engine part does the camshaft move to open cylinder valves?: -
lifters
22.Which manual has an area to write service history in it?: owner's
manual
23.Some radiators have two heat exchangers, one for the engine and one
for the:: transmission
24.What closes the valve in a cylinder head?: spring/return spring
25.Where should the technician find the oil change reset procedure for a
vehicle with an electronic oil change warning system?: owner's manual/
shop key
26.While driving down the highway, Mary notices a check engine light on
the dash. Which most likely caused the light to come on?: Bad/ faulty O2
sensor
27.Which part belongs inside a cylinder head?: valve stem seal
28.Which should be the last step in an engine oil change?: reset oil light
29.Why are radiator caps pressurized?: To raise boiling point of coolant
30.When a technician is pressurizing a cooling system, how much
pressure should be applied?: The amount stated on radiator cap
31.Which type of fluid most likely goes into a vehicle's engine?: 10w30
32.If the exhaust manifold on a vehicle is rusty, what should be done?:
noth- ing
33.If the check engine light is on for a vacuum leak, which type of
inspection would a technician perform first?: visual inspection
34.What color is associated with diesel exhaust fluid?: blue
35.Which part below is a component in the EVAP system?: fuel tank
36.Which name is commonly used when discussing diesel exhaust
fluid (DEF)?: AdBlue
37.A routine 5,000-mile-interval inspection includes checking the:: air filter
38.What is the most likely cause of a rattling sound coming from the
under- side of a vehicle?: loose exhaust heat shield
3/9
