AUTOMOTIVE ENGINES
DIAGNOSIS & REPAIR EXAM
REVIEWED QUESTIONS AND THEIR
CORRECT SOLUTIONS
Two technicians are discussing an engine
performance concern. Tech A states that it is
important to test drive the vehicle because there may
actually be no issue with the vehicle and the
customer's complaint is actually a normal operational
characteristic of the engine. Tech B states that a
technician should always check for TSB's before
performing any service of the engine because
manufacturer may have updated the failed component.
Which tech is correct?
Both techs are correct
The displacement of an engine can be altered by
changing all of the following EXCEPT WHAT?
Increasing the air inlet
A _______________ can break while in use due to
being dropped, this can spark a fire due to the heat it
emits. Due to this they should never be used in a shop
light.
Incandescent bulbs
Used engine oil can be recycled at ________________.
All answers are correct
Tech A states that the box-end of a wrench is less
likely to round the head of a bolt over the open-end of
,a wrench. Tech B states that 12-point sockets and
open ends of wrenches will hold more firmly when
removing and tightening bolts. Who is correct?
Tech A only
Which of the following steps is the last step in a
strategy-based diagnostic process?
Verifying the repair (quality control check)
Tech A states that a feeler gauge is used to measure
the diameter for small holes. Tech B states that a
feeler gauge and straight edge are used to check for
surface warpage on flat components such as engine
blocks and cylinder heads. Who is correct?
Tech B only
Which type/design of torque wrench has a simple
construction/design and is the least expensive option
for purchasing a torque wrench?
Beam
When measuring a bolt's dimensions, if it is an 8mm
bolt, 8mm refers to the:
Threads' outer diameter
Tech A states that when drilling out a broken fastener
it is important to drill slowly and steadily as to not
damage the component that the bolt is stuck in. Tech
B states that when drilling metal it is important to have
a slow enough drill speed to not overheat and damage
the drill bit. Who is correct?
Both techs are correct
Torque-to-yield blots:
Should be tightened using a torque angle wrench
Tech A states that a common method for repairing
damaged internal threads is a thread insert. Tech B
, states that a thread file is used to repair the threads
on the inside of a bolt hole. Who is correct?
Tech A only
Tech A says that personal protective equipment (PPE)
does not include clothing. Tech B says that the PPE
used should be based on the task you are performing.
Who is correct?
Tech B only
Tech A states that a tyme cert or thread insert will
strengthen an aluminum component when correctly
installed. Tech B states that the thread insert will
expand in place locking it to the component. Who is
correct?
Both techs are correct
Tech A states that cylinder heads can be designed
with a wedge combustion chamber. Tech B states that
a diesel engine will have the combustion chamber in
the top of the piston. Who is correct?
Both techs are correct
Cylinder heads can have a total of _______ intake and
exhaust valves.
-4
-2
-5
- All of the answers are correct
All of the answers are correct
Which nut design is made with a deformed top
thread?
Lock (pinch) nut
DIAGNOSIS & REPAIR EXAM
REVIEWED QUESTIONS AND THEIR
CORRECT SOLUTIONS
Two technicians are discussing an engine
performance concern. Tech A states that it is
important to test drive the vehicle because there may
actually be no issue with the vehicle and the
customer's complaint is actually a normal operational
characteristic of the engine. Tech B states that a
technician should always check for TSB's before
performing any service of the engine because
manufacturer may have updated the failed component.
Which tech is correct?
Both techs are correct
The displacement of an engine can be altered by
changing all of the following EXCEPT WHAT?
Increasing the air inlet
A _______________ can break while in use due to
being dropped, this can spark a fire due to the heat it
emits. Due to this they should never be used in a shop
light.
Incandescent bulbs
Used engine oil can be recycled at ________________.
All answers are correct
Tech A states that the box-end of a wrench is less
likely to round the head of a bolt over the open-end of
,a wrench. Tech B states that 12-point sockets and
open ends of wrenches will hold more firmly when
removing and tightening bolts. Who is correct?
Tech A only
Which of the following steps is the last step in a
strategy-based diagnostic process?
Verifying the repair (quality control check)
Tech A states that a feeler gauge is used to measure
the diameter for small holes. Tech B states that a
feeler gauge and straight edge are used to check for
surface warpage on flat components such as engine
blocks and cylinder heads. Who is correct?
Tech B only
Which type/design of torque wrench has a simple
construction/design and is the least expensive option
for purchasing a torque wrench?
Beam
When measuring a bolt's dimensions, if it is an 8mm
bolt, 8mm refers to the:
Threads' outer diameter
Tech A states that when drilling out a broken fastener
it is important to drill slowly and steadily as to not
damage the component that the bolt is stuck in. Tech
B states that when drilling metal it is important to have
a slow enough drill speed to not overheat and damage
the drill bit. Who is correct?
Both techs are correct
Torque-to-yield blots:
Should be tightened using a torque angle wrench
Tech A states that a common method for repairing
damaged internal threads is a thread insert. Tech B
, states that a thread file is used to repair the threads
on the inside of a bolt hole. Who is correct?
Tech A only
Tech A says that personal protective equipment (PPE)
does not include clothing. Tech B says that the PPE
used should be based on the task you are performing.
Who is correct?
Tech B only
Tech A states that a tyme cert or thread insert will
strengthen an aluminum component when correctly
installed. Tech B states that the thread insert will
expand in place locking it to the component. Who is
correct?
Both techs are correct
Tech A states that cylinder heads can be designed
with a wedge combustion chamber. Tech B states that
a diesel engine will have the combustion chamber in
the top of the piston. Who is correct?
Both techs are correct
Cylinder heads can have a total of _______ intake and
exhaust valves.
-4
-2
-5
- All of the answers are correct
All of the answers are correct
Which nut design is made with a deformed top
thread?
Lock (pinch) nut
