ASE Diesel Practice Test Questions and Answers (100% Correct)
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Course
ASE
Institution
ASE
ASE Diesel Practice Test Questions and
Answers (100% Correct)
When a diesel engine is operated under a load, coolant continually
comes out of the radiator overflow and there are bubbles in the
radiator. Which of these is the most likely cause?
(A) Too much coolant in the cooling system
(B) A ...
ASE Diesel Practice Test Questions and
Answers (100% Correct)
When a diesel engine is operated under a load, coolant continually
comes out of the radiator overflow and there are bubbles in the
radiator. Which of these is the most likely cause?
(A) Too much coolant in the cooling system
(B) A clogged radiator
(C) A stuck-open thermostat
(D) Compression leakage into the cooling system - Answer✔️✔️-D
A diesel engine has excessive black smoke when started in the
morning. Which of these could be the cause?
(A) A bad fuel injection nozzle
(B) A restricted fuel filter
(C) A blocked fuel tank vent
(D) A leaking fuel return line - Answer✔️✔️-A
Which of these can cause a no-start condition on a HEUI engine?
(A) High fuel pressure
(B) Low injection control pressure (C) High boost pressure
A diesel engine is hard to start, but runs good after it has been
primed and run for a few minutes. The most likely cause is a:
(A) leaking injector line.
(B) leaking fuel return line.
(C) plugged fuel tank vent.
(D) bad transfer pump check valve. - Answer✔️✔️-D
A diesel engine with wet liners has been running too hot, and there
is coolant in the crankcase. The most likely cause is:
(A) a cracked block.
(B) cracked liners.
(C) leaking liner seals.
(D) a leaking injector seal. - Answer✔️✔️-C
Diesel engine cylinder liner protrusion (height) can be adjusted by
selecting the correct size:
(A) cylinder liner.
(B) head gasket.
(C) liner shim.
(D) fire ring. - Answer✔️✔️-C
An electronically-controlled diesel engine will not start. Any of these
could be the cause EXCEPT a failed:
2
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