ASE practice test (diesel engine) T2 Already Passed 2024
Updated
A diesel engine has excessive oil consumption with no visible oil leaks.
Which of these could be the cause? - ANSWER---(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? -
ANSWER---(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? - ANSWER---(C) A
partially restricted radiator core
Which of these could be the cause of a loud ticking noise on a diesel
engine? - ANSWER---(A) Excessive valve lash
Excessive white smoke is observed coming from the exhaust. Which of
these could be the cause? - ANSWER---(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. -
ANSWER---(B) B only
, ASE practice test (diesel engine) T2 Already Passed 2024
Updated
The measurement in the setup shown indicates that a new valve is too
high. Which of these steps will correct the problem? - ANSWER---(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? -
ANSWER---(C) Both A and B
Cylinder liner protrusion (height) that is too low can be adjusted by: -
ANSWER---(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? - ANSWER---(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? -
ANSWER---(A) A only
The oil pressure gauge indicates low engine oil pressure at higher
engine rpm only. Which of these could be the cause? - ANSWER---(A) A
restricted oil pump pickup screen
Updated
A diesel engine has excessive oil consumption with no visible oil leaks.
Which of these could be the cause? - ANSWER---(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? -
ANSWER---(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? - ANSWER---(C) A
partially restricted radiator core
Which of these could be the cause of a loud ticking noise on a diesel
engine? - ANSWER---(A) Excessive valve lash
Excessive white smoke is observed coming from the exhaust. Which of
these could be the cause? - ANSWER---(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. -
ANSWER---(B) B only
, ASE practice test (diesel engine) T2 Already Passed 2024
Updated
The measurement in the setup shown indicates that a new valve is too
high. Which of these steps will correct the problem? - ANSWER---(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? -
ANSWER---(C) Both A and B
Cylinder liner protrusion (height) that is too low can be adjusted by: -
ANSWER---(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? - ANSWER---(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? -
ANSWER---(A) A only
The oil pressure gauge indicates low engine oil pressure at higher
engine rpm only. Which of these could be the cause? - ANSWER---(A) A
restricted oil pump pickup screen
