ASE A1 (ENGINE REPAIR) PRACTICE
TEST – CUMULATIVE
COMPREHENSIVE STUDY GUIDE 2026
FULL QUESTIONS AND SOLUTIONS
GRADED A+
◍ 2. which of the following steps is the tech LEAST LIKELY to take when
pressing the wrist pin into the piston and connecting rod-align the bores in
the piston and connecting rod-heat the small end of the rod-make sure that
position marks on the piston and connecting rod are oriented properly-heat
the wrist pin.
Answer: heat the wrist pin(heating the wrist pin is the LEAST LIKELY step
because it will cause the pin to expand and prevent it from fitting into the
connecting rod and piston bores)-the bores in the piston and the rod should
be aligned before pressing in the wrist pin-the small end of the rod should be
heated before pressing in the wrist pin-position marks on the piston and rod
should be oriented properly before pressing in the wrist pin
◍ 3. tech A says a special puller and installer tool is required to remove and
install the vibration damper. tech B says if the inertia ring on the vibration
damper is loose, the damper must be replacedABBothNeither.
Answer: BothA special puller and installer tool are required to remove and
install the vibration damper. Using a regular gear puller to remove the
vibration damper will damage the damper. Also, a loose inertia ring on the
damper requires replacement of the damper.
◍ 5. if new rings are installed without removing the ring ridge, what may be
the result?-piston skirt may be damaged-piston pin may be
, broken-connecting rod bearings may be damaged-piston ring lands and/or
top compression ring may crack.
Answer: piston ring lands and/or top compression ring may crack (failing to
remove the ridge ring may cause piston ring lands and/or the top
compression ring to crack or break after the engine is assembled and
started)-piston skirt & pin would not be damaged-connecting rod bearings
would not be affected
◍ 6. when measuring the crankshaft journal (in the figure), the difference
between measurements:A & B indicate horizontal taperC & D indicate
vertical taperA & C indicate out-of-roundA & D indicate out-of-round.
Answer: A & C indicate out-of-round-A&B indicate vertical taper-C&D
indicate horizontal taper-A&D do not indicate out-of-round
◍ An engine's connecting rod bearings are worn, resulting in low oil pressure
and a knocking sound at startup. Which of the following could be the
cause?.
Answer: D. Both A and B
◍ 15. tech A says a warped cylinder head mounting surface on a block may
cause valve seat distortion. tech B says a warped cylinder head mounting
surface a block may cause coolant and combustion leaksABBothNeither.
Answer: Botha warped head mounting surface on an engine block may
cause valve seat distortion. Also, it may cause coolant and combustion
leaks.
◍ 16. while discussing heli-coil installation, tech A says the 1st step is to use a
tap and thread the opening to match the external threads on the heli-coil.
tech B says the heli-coil should be installed with the proper size drill bit.
ABBothNeither.
Answer: Neither.~if the threads in a bolthole are damaged, the first step is to
drill the hole over-size. the hole is then re-threaded with a tap provided with
the repair kit. then, a thread repair insert (heli-coil) can be installed into the
oversize hole.-- A heli-coil is not installed with a drill
◍ 18. in the figure, a thermal cleaner is being used to prepare iron and steel
TEST – CUMULATIVE
COMPREHENSIVE STUDY GUIDE 2026
FULL QUESTIONS AND SOLUTIONS
GRADED A+
◍ 2. which of the following steps is the tech LEAST LIKELY to take when
pressing the wrist pin into the piston and connecting rod-align the bores in
the piston and connecting rod-heat the small end of the rod-make sure that
position marks on the piston and connecting rod are oriented properly-heat
the wrist pin.
Answer: heat the wrist pin(heating the wrist pin is the LEAST LIKELY step
because it will cause the pin to expand and prevent it from fitting into the
connecting rod and piston bores)-the bores in the piston and the rod should
be aligned before pressing in the wrist pin-the small end of the rod should be
heated before pressing in the wrist pin-position marks on the piston and rod
should be oriented properly before pressing in the wrist pin
◍ 3. tech A says a special puller and installer tool is required to remove and
install the vibration damper. tech B says if the inertia ring on the vibration
damper is loose, the damper must be replacedABBothNeither.
Answer: BothA special puller and installer tool are required to remove and
install the vibration damper. Using a regular gear puller to remove the
vibration damper will damage the damper. Also, a loose inertia ring on the
damper requires replacement of the damper.
◍ 5. if new rings are installed without removing the ring ridge, what may be
the result?-piston skirt may be damaged-piston pin may be
, broken-connecting rod bearings may be damaged-piston ring lands and/or
top compression ring may crack.
Answer: piston ring lands and/or top compression ring may crack (failing to
remove the ridge ring may cause piston ring lands and/or the top
compression ring to crack or break after the engine is assembled and
started)-piston skirt & pin would not be damaged-connecting rod bearings
would not be affected
◍ 6. when measuring the crankshaft journal (in the figure), the difference
between measurements:A & B indicate horizontal taperC & D indicate
vertical taperA & C indicate out-of-roundA & D indicate out-of-round.
Answer: A & C indicate out-of-round-A&B indicate vertical taper-C&D
indicate horizontal taper-A&D do not indicate out-of-round
◍ An engine's connecting rod bearings are worn, resulting in low oil pressure
and a knocking sound at startup. Which of the following could be the
cause?.
Answer: D. Both A and B
◍ 15. tech A says a warped cylinder head mounting surface on a block may
cause valve seat distortion. tech B says a warped cylinder head mounting
surface a block may cause coolant and combustion leaksABBothNeither.
Answer: Botha warped head mounting surface on an engine block may
cause valve seat distortion. Also, it may cause coolant and combustion
leaks.
◍ 16. while discussing heli-coil installation, tech A says the 1st step is to use a
tap and thread the opening to match the external threads on the heli-coil.
tech B says the heli-coil should be installed with the proper size drill bit.
ABBothNeither.
Answer: Neither.~if the threads in a bolthole are damaged, the first step is to
drill the hole over-size. the hole is then re-threaded with a tap provided with
the repair kit. then, a thread repair insert (heli-coil) can be installed into the
oversize hole.-- A heli-coil is not installed with a drill
◍ 18. in the figure, a thermal cleaner is being used to prepare iron and steel
