AUTO REPAIR TECHNICIAN LESSON 3 ACTUAL QUESTIONS AND ANSWERS
Technician A says that if a valve is open when a piston rises to the very top of a cylinder, the piston may
actually strike the valve head and cause serious engine damage. Technician B says if the camshaft is
located in the engine block, then the engine is called an overhead valve engine, OHV engine, or an in-
block camshaft Who is right?
a.) Neither A nor B
b.) B only
c.) A only
d.) Both A and B - CORRECT ANSWER✅✅Both A and B
Which of the following components serves as both a cover for the bottom of the engine block and a
reservoir for engine oil?
a.) Valve cover
b.) Front cover
c.) Oil pan
d.) Lubrication retainer - CORRECT ANSWER✅✅Oil pan
What engine component is shown in the above Figure?
a.) End bearing
b.) Thrust bearing
c.) Camshaft bearing
d.) Main bearing - CORRECT ANSWER✅✅Camshaft bearing - A typical camshaft bearing is shown here.
Most engines use full-circle bearings to support their camshafts. Note that this bearing contains oil holes
to allow lubrication by the oil pump system.
Fill in the blank label in the above figure.
a.) Bridge
b.) Cleave
b.) Margin
c.) Gap - CORRECT ANSWER✅✅Margin - The small area between the valve head and valve face is called
the valve margin. The valve margin is important to the operation of the valve. If the valve margin is too
, thin, the intense heat inside the engine will simply melt the margin away and prevent the valve from
sealing. A melted or burned valve margin is commonly called a burnt valve.
Look at the engine shown in the figure. What type of valve system does the engine shown in this figure
contain?
a.) An overhead valve design with hydraulic lifters
b.) An overhead camshaft design with solid lifters (WRONG)
c.) An overhead valve design with solid lifters
d.) An overhead camshaft design with hydraulic lifters - CORRECT ANSWER✅✅An overhead valve
design with solid lifters - An Adjustable Rocker Arm Assembly
In most engines, the head of the intake valve is _____ the head of the exhaust valve.
a.) the same size as
b.) a different shape than
c.) much smaller than
d.) slightly larger than - CORRECT ANSWER✅✅slightly larger than
Technician A says that the push rod connects to a pivoting component mounted at the top of the
cylinder head called the camshaft. Technician B says that the push rod is used to transmit the up-and-
down motion of the lifter to the top of the cylinder head. Who is right?
a.) B only
b.) Both A and B
c.) A only
d.) Neither A nor B - CORRECT ANSWER✅✅B only
The push rod connects to the ______, which is designed to pivot back and forth to open and close the
valve.
a.) valve stem
b.) rocker arm
c.) camshaft
d.) lifter - CORRECT ANSWER✅✅rocker arm
Technician A says that if a valve is open when a piston rises to the very top of a cylinder, the piston may
actually strike the valve head and cause serious engine damage. Technician B says if the camshaft is
located in the engine block, then the engine is called an overhead valve engine, OHV engine, or an in-
block camshaft Who is right?
a.) Neither A nor B
b.) B only
c.) A only
d.) Both A and B - CORRECT ANSWER✅✅Both A and B
Which of the following components serves as both a cover for the bottom of the engine block and a
reservoir for engine oil?
a.) Valve cover
b.) Front cover
c.) Oil pan
d.) Lubrication retainer - CORRECT ANSWER✅✅Oil pan
What engine component is shown in the above Figure?
a.) End bearing
b.) Thrust bearing
c.) Camshaft bearing
d.) Main bearing - CORRECT ANSWER✅✅Camshaft bearing - A typical camshaft bearing is shown here.
Most engines use full-circle bearings to support their camshafts. Note that this bearing contains oil holes
to allow lubrication by the oil pump system.
Fill in the blank label in the above figure.
a.) Bridge
b.) Cleave
b.) Margin
c.) Gap - CORRECT ANSWER✅✅Margin - The small area between the valve head and valve face is called
the valve margin. The valve margin is important to the operation of the valve. If the valve margin is too
, thin, the intense heat inside the engine will simply melt the margin away and prevent the valve from
sealing. A melted or burned valve margin is commonly called a burnt valve.
Look at the engine shown in the figure. What type of valve system does the engine shown in this figure
contain?
a.) An overhead valve design with hydraulic lifters
b.) An overhead camshaft design with solid lifters (WRONG)
c.) An overhead valve design with solid lifters
d.) An overhead camshaft design with hydraulic lifters - CORRECT ANSWER✅✅An overhead valve
design with solid lifters - An Adjustable Rocker Arm Assembly
In most engines, the head of the intake valve is _____ the head of the exhaust valve.
a.) the same size as
b.) a different shape than
c.) much smaller than
d.) slightly larger than - CORRECT ANSWER✅✅slightly larger than
Technician A says that the push rod connects to a pivoting component mounted at the top of the
cylinder head called the camshaft. Technician B says that the push rod is used to transmit the up-and-
down motion of the lifter to the top of the cylinder head. Who is right?
a.) B only
b.) Both A and B
c.) A only
d.) Neither A nor B - CORRECT ANSWER✅✅B only
The push rod connects to the ______, which is designed to pivot back and forth to open and close the
valve.
a.) valve stem
b.) rocker arm
c.) camshaft
d.) lifter - CORRECT ANSWER✅✅rocker arm
