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ASE DIESEL ENGINES TEST T2 PRACTICE TEST 1 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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ASE DIESEL ENGINES TEST T2 PRACTICE TEST 1 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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ASE DIESEL ENGINES TEST T2PRACTICE TEST 1 QUESTIONS AND
ANSWERS WITH SOLUTIONS 2024
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
( 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
(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
(If the engine brake engages while pulling a hill, the most likely problem is with accelerator pedal
position sensor.)
A piston has a diagonal wear pattern across the skirt. The could be caused by:
A. A wrapped cylinder head
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