T2 ASE Test Prep: Essential Flash Cards for Success
1. The correct answer is D. Combustion leakage puts hot gases into coolant, which not only is the direct
cause of the bubbles, but also causes coolant loss. This happens because the gases constantly build
system pressure to the point where the cap opens. A is incorrect because too much coolant in the
system would empty through the overflow. B is incorrect because a clogged radiator would cause
overheating. C is incorrect because a stuck-open thermostat would cause the coolant to build even less
pressure than is normal, meaning no coolant loss would occur. - correct answer ✔✔1. When a diesel
engine is operated under a load, coolant continually comes out of the radiator overflow and there are
bubbles in the radiator. The MOST LIKELY cause of this problem is:
A. too much coolant in the cooling system
B. a clogged radiator
C. a stuck-open thermostat
D. combustion leakage into the cooling system
2. The correct answer is A. Valves that are too tight do not seat long enough to cool properly. They may
even remain slightly open at all times, allowing severe overheating because the heads would be
constantly surrounded by exhaust gases. The problems listed in answers B, C, and D would cause a
general overheating or overstressing of the engine, rather than overheating the valves only. - correct
answer ✔✔2. A diesel engine with 25,000 miles on a major overhaul has low power and misses. It also
has low compression and the valves and seats are burned. Which of these is the MOST LIKELY cause of
these problems?
A. The valves were set too tight.
B. The engine was lugged down too often.
C. The fuel system timing was over-advanced.
D. The air cleaner was not serviced often enough.
3. The correct answer is A, connecting rod journal diameter. B is rod journal width, C is the main journal
diameter, and D is the main bearing journal width. - correct answer ✔✔3. In the diagram shown above,
the crankshaft rod journal diameter should be measured at:
A. point A
B. point B
C. point C
D. point D
,4. The correct answer is D. The indicator pin is resting on the inside diameter of the bore that retains the
clutch pilot bearing. The indicator is mounted so the crankshaft can be turned while the indicator stays
sta-tionary. Any variation in the position of the bore in relation to the indicator will cause a variation or
runout reading. - correct answer ✔✔4. The set-up shown above is used to check the:
A. flywheel housing lateral runout
B. flywheel face lateral runout
C. flywheel housing radial runout
D. flywheel pilot bore radial runout
5. The correct answer is B. Combustion leakage will occur with a short liner because the clamping force
that traps the head gasket between the head and the liner will be lost, allowing leakage. A is incorrect
because the ring fit to the liner would not be affected. C is incorrect because the valves do not descend
above the liner, but above the piston. D is incorrect because there is almost no oil at the top of the
piston to leak past the liner. - correct answer ✔✔5. Which of these can happen if the cylinder liner
height is too low?
A. liner-ring leakage
B. combustion leakage
C. valve-to-liner contact
D. excessive lube oil consumption
6. The correct answer is C. Both technicians are cor-rect. Technician A is correct because restricted fuel
filters can cause low fuel pressure, leading to reduced engine power. Technician B is correct because a
restricted diesel particulate filter can cause excessive exhaust restriction and low engine power, - correct
answer ✔✔6. A diesel engine suffers from low power under load.
Technician A says this could be caused by restricted fuel filters. Technician B says this could be caused by
a restricted DPF. Who is correct?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B
, 7. The correct answer is A. Only Technician A is cor-rect. It is necessary to check liner protrusion (height)
because of possible variations in the production dimensions of the liner and because of possible wear or
damage to the block that could cause the liner to sit too low.
Technician B is incorrect because a new liner is highly unlikely to be manufactured with a taper in its
bore. - correct answer ✔✔7. A new wet-type cylinder liner is being installed in an engine block.
Technician A says the liner height should be checked. Technician B says the liner taper should be
checked. Who is correct?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B
8. The correct answer is A. Only Technician A is cor-rect. Oil in the head bolt holes will cause the block to
crack. The block will be subject to stretching stresses, which can easily damage metal. Technician B is
incorrect because compression of the oil in the bolt holes will not stretch the bolts. - correct answer
✔✔8. New cylinder heads are being installed on a diesel engine and some of the head bolt holes in the
block are partially filled with oil. Technician A says if the head bolts are torqued without cleaning the
holes, the cylinder block could crack. Technician B says if the head bolts are torqued without cleaning the
holes, the bolts could be stretched. Who is correct?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B
9. The correct answer is A. Installing the bearings up-side-down can block oil holes, leaving the bearings
dry and causing immediate failure. All of the other answers might tend to cause such damage, but only
over a very long period of time after a great many cold starts. - correct answer ✔✔9. A newly rebuilt
engine has locked up after five minutes of operation. While it was running, the warm-up temperature
was normal. Which of these could be the cause of lockup?
A. The main bearings were installed upside down.
B. The wrong warm-up procedure was used.
C. The engine lube oil was too heavy.
D. An engine load was applied too quickly.
1. The correct answer is D. Combustion leakage puts hot gases into coolant, which not only is the direct
cause of the bubbles, but also causes coolant loss. This happens because the gases constantly build
system pressure to the point where the cap opens. A is incorrect because too much coolant in the
system would empty through the overflow. B is incorrect because a clogged radiator would cause
overheating. C is incorrect because a stuck-open thermostat would cause the coolant to build even less
pressure than is normal, meaning no coolant loss would occur. - correct answer ✔✔1. When a diesel
engine is operated under a load, coolant continually comes out of the radiator overflow and there are
bubbles in the radiator. The MOST LIKELY cause of this problem is:
A. too much coolant in the cooling system
B. a clogged radiator
C. a stuck-open thermostat
D. combustion leakage into the cooling system
2. The correct answer is A. Valves that are too tight do not seat long enough to cool properly. They may
even remain slightly open at all times, allowing severe overheating because the heads would be
constantly surrounded by exhaust gases. The problems listed in answers B, C, and D would cause a
general overheating or overstressing of the engine, rather than overheating the valves only. - correct
answer ✔✔2. A diesel engine with 25,000 miles on a major overhaul has low power and misses. It also
has low compression and the valves and seats are burned. Which of these is the MOST LIKELY cause of
these problems?
A. The valves were set too tight.
B. The engine was lugged down too often.
C. The fuel system timing was over-advanced.
D. The air cleaner was not serviced often enough.
3. The correct answer is A, connecting rod journal diameter. B is rod journal width, C is the main journal
diameter, and D is the main bearing journal width. - correct answer ✔✔3. In the diagram shown above,
the crankshaft rod journal diameter should be measured at:
A. point A
B. point B
C. point C
D. point D
,4. The correct answer is D. The indicator pin is resting on the inside diameter of the bore that retains the
clutch pilot bearing. The indicator is mounted so the crankshaft can be turned while the indicator stays
sta-tionary. Any variation in the position of the bore in relation to the indicator will cause a variation or
runout reading. - correct answer ✔✔4. The set-up shown above is used to check the:
A. flywheel housing lateral runout
B. flywheel face lateral runout
C. flywheel housing radial runout
D. flywheel pilot bore radial runout
5. The correct answer is B. Combustion leakage will occur with a short liner because the clamping force
that traps the head gasket between the head and the liner will be lost, allowing leakage. A is incorrect
because the ring fit to the liner would not be affected. C is incorrect because the valves do not descend
above the liner, but above the piston. D is incorrect because there is almost no oil at the top of the
piston to leak past the liner. - correct answer ✔✔5. Which of these can happen if the cylinder liner
height is too low?
A. liner-ring leakage
B. combustion leakage
C. valve-to-liner contact
D. excessive lube oil consumption
6. The correct answer is C. Both technicians are cor-rect. Technician A is correct because restricted fuel
filters can cause low fuel pressure, leading to reduced engine power. Technician B is correct because a
restricted diesel particulate filter can cause excessive exhaust restriction and low engine power, - correct
answer ✔✔6. A diesel engine suffers from low power under load.
Technician A says this could be caused by restricted fuel filters. Technician B says this could be caused by
a restricted DPF. Who is correct?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B
, 7. The correct answer is A. Only Technician A is cor-rect. It is necessary to check liner protrusion (height)
because of possible variations in the production dimensions of the liner and because of possible wear or
damage to the block that could cause the liner to sit too low.
Technician B is incorrect because a new liner is highly unlikely to be manufactured with a taper in its
bore. - correct answer ✔✔7. A new wet-type cylinder liner is being installed in an engine block.
Technician A says the liner height should be checked. Technician B says the liner taper should be
checked. Who is correct?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B
8. The correct answer is A. Only Technician A is cor-rect. Oil in the head bolt holes will cause the block to
crack. The block will be subject to stretching stresses, which can easily damage metal. Technician B is
incorrect because compression of the oil in the bolt holes will not stretch the bolts. - correct answer
✔✔8. New cylinder heads are being installed on a diesel engine and some of the head bolt holes in the
block are partially filled with oil. Technician A says if the head bolts are torqued without cleaning the
holes, the cylinder block could crack. Technician B says if the head bolts are torqued without cleaning the
holes, the bolts could be stretched. Who is correct?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B
9. The correct answer is A. Installing the bearings up-side-down can block oil holes, leaving the bearings
dry and causing immediate failure. All of the other answers might tend to cause such damage, but only
over a very long period of time after a great many cold starts. - correct answer ✔✔9. A newly rebuilt
engine has locked up after five minutes of operation. While it was running, the warm-up temperature
was normal. Which of these could be the cause of lockup?
A. The main bearings were installed upside down.
B. The wrong warm-up procedure was used.
C. The engine lube oil was too heavy.
D. An engine load was applied too quickly.
