©SOPHIABENNET@2024/2025 Wednesday, August 21, 2024 12:13 PM
ASE Diesel Engines test T2 practice test 1
Questions and Answers (100% Pass)
Which of the following should be done after installing a new copper
injector sleeve?
A. Heat it
B. Dress it
C. Ream the seat
D. Coat it with a looking compound - Answer✔️✔️-C. Ream the seat
(This reaming ensures there will be a good clean area for the
injector to seal against)
A diesel engine has oil in the radiator. Which of the following would
be the cause?
A. Cracked piston cooling nozzle
B. Cracked oil cooler
C. Restricted turbocharger drain line
D. Restricted exhaust gas recirculation (EGR) cooler - Answer✔️✔️-B.
Cracked oil cooler
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, ©SOPHIABENNET@2024/2025 Wednesday, August 21, 2024 12:13 PM
( A cracked oil cooler will allow the oil into the cooling system; thus,
oil would get in the radiator.)
A diesel engine has bubbles flowing in the clear bowl on the
fuel/water separator. Technician A says this is caused by a
restricted fuel return line. Technician B says this is caused by leaks
on the return side of the fuel system. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B - Answer✔️✔️-D. Neither A nor B
(Bubbles flowing the separator indicate an air leak on the suction
side of the fuel system.)
A truck has been sitting for 12 hours. Which of the following open-
circuit voltages would indicate a fully charged battery?
A. 11.6 volts
B. 12.0 volts
C. 12.6 volts
D. 13.0 volts - Answer✔️✔️-C. 12.6
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, ©SOPHIABENNET@2024/2025 Wednesday, August 21, 2024 12:13 PM
(A fully charged battery should have an open-circuit voltage of 12.6
volts.)
The engine oil pressure gauge fluctuates greatly. All of the following
be the cause EXCEPT:
A. The oil pan is overfilled
B. The oil pickup tube is loose
C. The wrong engine oil was installed
D. The oil pressure sensor is failing - Answer✔️✔️-C. The wrong
engine oil was installed
( The incorrect oil may not provide proper lubrication, but it will
NOT cause great pressure fluctuations)
The engine brake will occasionally come on when pulling a hill.
Technician A says the clutch switch may be faulty. Technician B
says the master switch may be faulty. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B - Answer✔️✔️-D. Neither A nor B
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ASE Diesel Engines test T2 practice test 1
Questions and Answers (100% Pass)
Which of the following should be done after installing a new copper
injector sleeve?
A. Heat it
B. Dress it
C. Ream the seat
D. Coat it with a looking compound - Answer✔️✔️-C. Ream the seat
(This reaming ensures there will be a good clean area for the
injector to seal against)
A diesel engine has oil in the radiator. Which of the following would
be the cause?
A. Cracked piston cooling nozzle
B. Cracked oil cooler
C. Restricted turbocharger drain line
D. Restricted exhaust gas recirculation (EGR) cooler - Answer✔️✔️-B.
Cracked oil cooler
1
, ©SOPHIABENNET@2024/2025 Wednesday, August 21, 2024 12:13 PM
( A cracked oil cooler will allow the oil into the cooling system; thus,
oil would get in the radiator.)
A diesel engine has bubbles flowing in the clear bowl on the
fuel/water separator. Technician A says this is caused by a
restricted fuel return line. Technician B says this is caused by leaks
on the return side of the fuel system. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B - Answer✔️✔️-D. Neither A nor B
(Bubbles flowing the separator indicate an air leak on the suction
side of the fuel system.)
A truck has been sitting for 12 hours. Which of the following open-
circuit voltages would indicate a fully charged battery?
A. 11.6 volts
B. 12.0 volts
C. 12.6 volts
D. 13.0 volts - Answer✔️✔️-C. 12.6
2
, ©SOPHIABENNET@2024/2025 Wednesday, August 21, 2024 12:13 PM
(A fully charged battery should have an open-circuit voltage of 12.6
volts.)
The engine oil pressure gauge fluctuates greatly. All of the following
be the cause EXCEPT:
A. The oil pan is overfilled
B. The oil pickup tube is loose
C. The wrong engine oil was installed
D. The oil pressure sensor is failing - Answer✔️✔️-C. The wrong
engine oil was installed
( The incorrect oil may not provide proper lubrication, but it will
NOT cause great pressure fluctuations)
The engine brake will occasionally come on when pulling a hill.
Technician A says the clutch switch may be faulty. Technician B
says the master switch may be faulty. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B - Answer✔️✔️-D. Neither A nor B
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