ASE practice test (diesel engine) T2 Already Passed
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Course
ASE
Institution
ASE
A diesel engine has excessive oil consumption with no visible oil leaks. Which of these could be
the cause?
(D) A leaking turbocharger impeller shaft seal
Which of these could be the cause of blue smoke from the exhaust on a vehicle that is not
equipped with an exhaust aftertreatment system?
(...
ASE practice test (diesel engine) T2
Already Passed
A diesel engine has excessive oil consumption with no visible oil leaks. Which of these could be
the cause?
(D) A leaking turbocharger impeller shaft seal
Which of these could be the cause of blue smoke from the exhaust on a vehicle that is not
equipped with an exhaust aftertreatment system?
(C) Worn piston rings
During long uphill pulls, a delivery truck equipped with an engine protection system activates a
warning light and buzzer, and the engine derates power. Which of these could be the cause?
(C) A partially restricted radiator core
Which of these could be the cause of a loud ticking noise on a diesel engine?
(A) Excessive valve lash
Excessive white smoke is observed coming from the exhaust. Which of these could be the cause?
(A) A leaking fuel injector cup
A diesel engine has excessive vibration. Technician A says that binding variable geometry
turbocharger (VGT) vanes could be the cause. Technician B says that a broken
flywheel/flexplate could be the cause.
(B) B only
, The measurement in the setup shown indicates that a new valve is too high. Which of these steps
will correct the problem?
(D) Remove material from the valve seat.
Technician A says that debris in the cylinder head bolt holes can affect head bolt clamping force.
Technician B says that using over-stretched cylinder head bolts can affect head bolt clamping
force. Who is right?
(C) Both A and B
Cylinder liner protrusion (height) that is too low can be adjusted by:
(C) adding cylinder liner shims.
A truck engine has excessive crankcase pressure. During disassembly, the technician notices
excessive wear on the cylinder walls and upper piston rings. Which of these could be the cause?
(B) A missing engine air filter seal
While 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
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