1
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ASE A1 Questions and Answers (100%
Correct Answers) Already Graded A+
Technician A says that oil should be squirted into all of the
cylinders before taking a compression test. Technician B says that
if the compression greatly increases when some oil is squirted into
the cylin- ders, it indicates defective or worn piston rings. Which
technician is correct?
© 2025 Assignment Expert
a. A only
b. B only
Guru01 - Stuvia
c. Both A and B
d. Neither A nor B [ Ans: ] The correct answer is b. Technician B is
correct that if the compression reading is greatly increased with a
couple of squirts of oil in the cylinder, then when the compression
test is first performed without the oil, the piston rings are worn or
broken. Technician A is not correct because oil should only be
squirted into those cylinders that achieved a lower than normal
compression test reading to help de- termine the reason for the
low compression. Answers c and d are not correct because only
Technician B is correct.
Two technicians are discussing oil leaks. Technician A says that an
oil leak can be found using a fluo- rescent dye in the oil with a
black light to check for leaks. Technician B says that a white spray
powder can be used to locate oil leaks. Which technician is
correct?
a. A only
b. B only
, 2
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c. Both A and B
d. Neither A nor B [ Ans: ] The correct answer is c. Both
technicians are correct. Technician A is correct that a fluorescent
dye can be added to the engine oil and allowed to circulate. A
black light is then turned on and any leaks will show as a bright
yellow-green area. This is the preferred method for locating fluid
leaks. Technician B is correct because a white powder spray (such
as foot spray) will show the location of leaks by turning dark where
the liquid contacts the white powder. Answers a, b, and d are not
correct because both technicians are correct.
Technician A says that a worn (stretched) timing chain and worn
gears will cause the valve timing to be retarded. Technician B says
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that if the timing chain slack is over 1⁄2 inch (13 mm), the timing
chain and gears should be replaced. Which technician is correct?
Guru01 - Stuvia
a. A only
b. B only
c. Both A and B
d. Neither A nor B [ Ans: ] The correct answer is c. Both
technicians are correct. Technician A POINT TIMING
is correct because as the timing chain stretches, the camshaft will
lag behind the rotation of the crankshaft (retarded). Technician B
is cor- rect because the timing chain and gears should all be
replaced as a set if the slack is greater than factory specifications
(usually less than 1⁄2 in.). Answers a, b, and d are not correct
because both technicians are correct.
Leaking antifreeze can be what color?
a. Green
b. Orange
c. Red
, 3
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d. Any of the above [ Ans: ] The correct answer is d. Antifreeze
can be green (older IAT-type or phosphate organic acid
technology, which is a dark green), as well as orange (DEX-
COOL), or red (Asian red). Answers a, b, and c are not correct
because any of the colors could indicate a coolant (antifreeze)
leak.
An increase in oil viscosity can be due to ______________.
a. wear metals in the oil
b. fuel dilution of the oil
c. a clogged air filter
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d. any of the above [ Ans: ] The correct answer is a. Small
particles of steel, cast iron, and other metals in an engine can
react chemically to increase the viscosity (thickness) of the oil.
Guru01 - Stuvia
Answer b is not correct because if fuel were added to oil, it would
become thinner (lower viscosity). Answer c is not correct because
a clogged air filter does not have a direct effect on the viscosity
of the oil. It is true that dirt could get into the oil, which will make
the oil thicker but this is not a direct result of the air filter itself.
Answer d is not correct because it includes b and c, which are not
correct.
Oil is discovered inside the air cleaner assembly. Technician A says
that the cause could be excessive blowby past the piston rings.
Technician B says that the cause could be a clogged PCV valve,
hose, or passage. Which technician is correct?
a. Technician A
b. Technician B
c. Both A and B
d. Neither A nor B [ Ans: ] The correct answer is c. Both
technicians are correct. Technician A is correct because if the
piston rings are worn or defective, blowby gases will force oil
, 4
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fumes out of the PCV system inlet and into the air cleaner
assembly. Technician B is correct because if the PCV valve or hose
is clogged, all crankcase vapors have only one place to go and
that is through the PCV system inlet hose that gets its fresh air from
the air cleaner assembly. Answers a, b, and d are not correct
because both technicians are correct.
Two technicians are discussing the cause of low oil pressure.
Technician A says that a worn oil pump could be the cause.
Technician B says that worn main or rod bearings could be the
cause. Which technician is correct?
© 2025 Assignment Expert
a. A only
b. B only
c. Both A and B
Guru01 - Stuvia
d. Neither A nor B [ Ans: ] The correct answer is c. Both
technicians are correct. Technician A is correct because a worn
oil pump can cause low oil pressure. An oil pump wears because it
is the only engine part that operates on unfiltered oil. Technician B
is correct because worn bearings allow an excessive amount of oil
to escape and return to the oil pan resulting in a drop in oil
pressure. Answers a, b, and d are not correct because both
technicians are correct.
A noisy valve train is being diagnosed. Technician A says that the
rocker arm may be adjusted too tightly. Technician B says that the
rocker arm may be adjusted too loosely or may be worn. Which
technician is correct?
a. A only
b. B only
c. Both A and B
d. Neither A nor B [ Ans: ] The correct answer is b. Technician B is
correct because noise is created by the rocker arm pound- ing
For Expert help and assignment solutions, +254707240657
ASE A1 Questions and Answers (100%
Correct Answers) Already Graded A+
Technician A says that oil should be squirted into all of the
cylinders before taking a compression test. Technician B says that
if the compression greatly increases when some oil is squirted into
the cylin- ders, it indicates defective or worn piston rings. Which
technician is correct?
© 2025 Assignment Expert
a. A only
b. B only
Guru01 - Stuvia
c. Both A and B
d. Neither A nor B [ Ans: ] The correct answer is b. Technician B is
correct that if the compression reading is greatly increased with a
couple of squirts of oil in the cylinder, then when the compression
test is first performed without the oil, the piston rings are worn or
broken. Technician A is not correct because oil should only be
squirted into those cylinders that achieved a lower than normal
compression test reading to help de- termine the reason for the
low compression. Answers c and d are not correct because only
Technician B is correct.
Two technicians are discussing oil leaks. Technician A says that an
oil leak can be found using a fluo- rescent dye in the oil with a
black light to check for leaks. Technician B says that a white spray
powder can be used to locate oil leaks. Which technician is
correct?
a. A only
b. B only
, 2
For Expert help and assignment solutions, +254707240657
c. Both A and B
d. Neither A nor B [ Ans: ] The correct answer is c. Both
technicians are correct. Technician A is correct that a fluorescent
dye can be added to the engine oil and allowed to circulate. A
black light is then turned on and any leaks will show as a bright
yellow-green area. This is the preferred method for locating fluid
leaks. Technician B is correct because a white powder spray (such
as foot spray) will show the location of leaks by turning dark where
the liquid contacts the white powder. Answers a, b, and d are not
correct because both technicians are correct.
Technician A says that a worn (stretched) timing chain and worn
gears will cause the valve timing to be retarded. Technician B says
© 2025 Assignment Expert
that if the timing chain slack is over 1⁄2 inch (13 mm), the timing
chain and gears should be replaced. Which technician is correct?
Guru01 - Stuvia
a. A only
b. B only
c. Both A and B
d. Neither A nor B [ Ans: ] The correct answer is c. Both
technicians are correct. Technician A POINT TIMING
is correct because as the timing chain stretches, the camshaft will
lag behind the rotation of the crankshaft (retarded). Technician B
is cor- rect because the timing chain and gears should all be
replaced as a set if the slack is greater than factory specifications
(usually less than 1⁄2 in.). Answers a, b, and d are not correct
because both technicians are correct.
Leaking antifreeze can be what color?
a. Green
b. Orange
c. Red
, 3
For Expert help and assignment solutions, +254707240657
d. Any of the above [ Ans: ] The correct answer is d. Antifreeze
can be green (older IAT-type or phosphate organic acid
technology, which is a dark green), as well as orange (DEX-
COOL), or red (Asian red). Answers a, b, and c are not correct
because any of the colors could indicate a coolant (antifreeze)
leak.
An increase in oil viscosity can be due to ______________.
a. wear metals in the oil
b. fuel dilution of the oil
c. a clogged air filter
© 2025 Assignment Expert
d. any of the above [ Ans: ] The correct answer is a. Small
particles of steel, cast iron, and other metals in an engine can
react chemically to increase the viscosity (thickness) of the oil.
Guru01 - Stuvia
Answer b is not correct because if fuel were added to oil, it would
become thinner (lower viscosity). Answer c is not correct because
a clogged air filter does not have a direct effect on the viscosity
of the oil. It is true that dirt could get into the oil, which will make
the oil thicker but this is not a direct result of the air filter itself.
Answer d is not correct because it includes b and c, which are not
correct.
Oil is discovered inside the air cleaner assembly. Technician A says
that the cause could be excessive blowby past the piston rings.
Technician B says that the cause could be a clogged PCV valve,
hose, or passage. Which technician is correct?
a. Technician A
b. Technician B
c. Both A and B
d. Neither A nor B [ Ans: ] The correct answer is c. Both
technicians are correct. Technician A is correct because if the
piston rings are worn or defective, blowby gases will force oil
, 4
For Expert help and assignment solutions, +254707240657
fumes out of the PCV system inlet and into the air cleaner
assembly. Technician B is correct because if the PCV valve or hose
is clogged, all crankcase vapors have only one place to go and
that is through the PCV system inlet hose that gets its fresh air from
the air cleaner assembly. Answers a, b, and d are not correct
because both technicians are correct.
Two technicians are discussing the cause of low oil pressure.
Technician A says that a worn oil pump could be the cause.
Technician B says that worn main or rod bearings could be the
cause. Which technician is correct?
© 2025 Assignment Expert
a. A only
b. B only
c. Both A and B
Guru01 - Stuvia
d. Neither A nor B [ Ans: ] The correct answer is c. Both
technicians are correct. Technician A is correct because a worn
oil pump can cause low oil pressure. An oil pump wears because it
is the only engine part that operates on unfiltered oil. Technician B
is correct because worn bearings allow an excessive amount of oil
to escape and return to the oil pan resulting in a drop in oil
pressure. Answers a, b, and d are not correct because both
technicians are correct.
A noisy valve train is being diagnosed. Technician A says that the
rocker arm may be adjusted too tightly. Technician B says that the
rocker arm may be adjusted too loosely or may be worn. Which
technician is correct?
a. A only
b. B only
c. Both A and B
d. Neither A nor B [ Ans: ] The correct answer is b. Technician B is
correct because noise is created by the rocker arm pound- ing
