Exam (elaborations)
ASE PRACTICE TEST (DIESEL ENGINE) T2 QUESTIONS AND ANSWERS 2024
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ASE PRACTICE TEST (DIESEL ENGINE) T2 QUESTIONS AND ANSWERS 2024
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ASE PRACTICE TEST (DIESEL ENGINE) T2While servicing an engine, the technician finds a slight amount of scoring on the
engine side of the flywheel. Technician A says that excessive crankshaft endplay
could be the cause. Technician B says that missing bell housing locating pins could
be the cause. Who is right?
(A) A only
The oil pressure gauge indicates low engine oil pressure at higher engine rpm
only. Which of these could be the cause?
(A) A restricted oil pump pickup screen
During inspection, the technician observes engine oil in the coolant expansion
tank. This could be caused by a leaking:
(A) oil cooler heat exchanger.
A diesel engine is being diagnosed for overheating. Once the engine reaches
operating temperature, coolant leaks out of the overflow. Which of these could
be the cause?
(B) A leaking cylinder head gasket
While performing a stationary regeneration, the technician notices no significant
rise in the diesel oxidation catalyst (DOC) temperature. Which of these could be
the cause?
, (C) An exhaust leak in front of the DOC
A diesel engine is being diagnosed for coolant consumption. There are no external
leaks and the engine oil does not show coolant contamination. Which of these
could be the cause?
(D) A failed EGR cooler
A diesel engine equipped with an exhaust aftertreatment system emits black
smoke from the exhaust. Which of these could be the cause?
(B) An internally failed diesel particulate filter (DPF)
A diesel engine equipped with a high-pressure common rail (HPCR) fuel system
cranks normally, but will not start. Which of these could be the cause?
(A) An internally leaking fuel pressure limiting valve
An electronic diesel engine has low power only while under load. This could be
caused by a:
(A) restricted intake manifold pressure sensor port.
A diesel engine with a hydraulic electronic unit injector (HEUI) fuel system will not
start. During diagnosis, there is no injection control pressure (ICP). Which of these
could be the cause?
(B) A low engine oil level
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