ASE A1- Engine Repair Questions and Answers with Verified Solutions
| Latest 2026 Update
Q: When cleaning a cylinder block for final assembly, which of the following
should be used?
Answer:
A. Carburetor cleaner B. Kerosene or cutting lubricant C. Hot, Soapy water and a
bristle brush D. Petroleum solvent The correct answer is C. Cylinder walls are best
cleaned with hot water and a stiff bristle brush. Solvents drive grit deeper into the
pores of the cast iron cylinder wall.
Q: Technician A says that a cylinder should be bored to within 0.001-in. (0.025mm)
of final size. Technician B says that a plateau finish on the cylinder bore will
help seat the piston rings. Who is right?
Answer:
A. Technician A only B. Technician B only C. Both A and B D. Neither A or B The
correct answer is B. When a cylinder is bored, 0.0025-0.003-in. (0.064- 0.076mm)
cylinder wall material is left for finish honing to final size. This is necessary to
completely remove the rough finish left by the boring tool. Following normal honing
some manufacturers recommend a plateau finish in the bore. Plateau honing levels
off the peaks left in the bore surface from honing. As a final polishing step it forms
flat plateau areas between the grooves or valleys of the crosshatch. A plateau surface
retains oil and allows faster ring seating, while reducing ring and cylinder wear.
,ASE A1- Engine Repair Questions and Answers with Verified Solutions
| Latest 2026 Update
Q: Technician A says the retainer clips on pistons with floating pins should be
reused if they are not damaged. Technician B says that after a full floating pin
bushing is pressed into the rod, the piston and rod is then reassembled. Who is
right?
Answer:
A. Technician A only B. Technician B only
Q: C. Both A and B
Answer:
D. Neither A or B The correct answer is D, neither technician is right. On engines
with a full-
floating wrist pins, the retainer clips at the ends of the pin should always be replaced
with new
ones. Full floating pin bushings that are worn are replaced by pressing them in. Then
they are
finished honed to provide the correct clearance.
,ASE A1- Engine Repair Questions and Answers with Verified Solutions
| Latest 2026 Update
Q: All of the following statements about piston rings are true EXCEPT
Answer:
A. Ring end gap must be measured prior to installation.
B. Rings must be installed facing the correct vertical direction.
C. Rings are installed on the piston using a ring compressor.
D. Ring end gaps must be staggered around the piston. The correct answer is C.
Rings are
installed on the piston using a ring expander; they are installed in the cylinder with
the piston
using a ring compressor.
, ASE A1- Engine Repair Questions and Answers with Verified Solutions
| Latest 2026 Update
Q: A manifold vacuum test is performed on an engine in a shop that is located
approximately 4000 ft. (1.2km) above sea level. With the engine at normal
operating temperature, the gauge reads a steady 15 in. Hg at idle. Which of the
following is indicated by this vacuum reading?
Answer:
A. Late ignition timing. B. Low compression. C. Vacuum leak. D. Normal operation.
The correct answer is D. If the shop was located at seal level, any of the other
answers might be indicated by this vacuum reading. But remember, atmospheric
pressure changes with elevation and vacuum readings must be adjusted accordingly.
As an approximation for ever 1000 ft. above sea level, remove one inch of vacuum.
If we correct for elevation, we can see that this engine would produce 19 in. Hg
vacuum at idle at sea level, which is within the parameters for normal engine
operation.
Q: An engine has a light metallic knocking noise during light engine loads,
however, when the
Answer:
cylinder
| Latest 2026 Update
Q: When cleaning a cylinder block for final assembly, which of the following
should be used?
Answer:
A. Carburetor cleaner B. Kerosene or cutting lubricant C. Hot, Soapy water and a
bristle brush D. Petroleum solvent The correct answer is C. Cylinder walls are best
cleaned with hot water and a stiff bristle brush. Solvents drive grit deeper into the
pores of the cast iron cylinder wall.
Q: Technician A says that a cylinder should be bored to within 0.001-in. (0.025mm)
of final size. Technician B says that a plateau finish on the cylinder bore will
help seat the piston rings. Who is right?
Answer:
A. Technician A only B. Technician B only C. Both A and B D. Neither A or B The
correct answer is B. When a cylinder is bored, 0.0025-0.003-in. (0.064- 0.076mm)
cylinder wall material is left for finish honing to final size. This is necessary to
completely remove the rough finish left by the boring tool. Following normal honing
some manufacturers recommend a plateau finish in the bore. Plateau honing levels
off the peaks left in the bore surface from honing. As a final polishing step it forms
flat plateau areas between the grooves or valleys of the crosshatch. A plateau surface
retains oil and allows faster ring seating, while reducing ring and cylinder wear.
,ASE A1- Engine Repair Questions and Answers with Verified Solutions
| Latest 2026 Update
Q: Technician A says the retainer clips on pistons with floating pins should be
reused if they are not damaged. Technician B says that after a full floating pin
bushing is pressed into the rod, the piston and rod is then reassembled. Who is
right?
Answer:
A. Technician A only B. Technician B only
Q: C. Both A and B
Answer:
D. Neither A or B The correct answer is D, neither technician is right. On engines
with a full-
floating wrist pins, the retainer clips at the ends of the pin should always be replaced
with new
ones. Full floating pin bushings that are worn are replaced by pressing them in. Then
they are
finished honed to provide the correct clearance.
,ASE A1- Engine Repair Questions and Answers with Verified Solutions
| Latest 2026 Update
Q: All of the following statements about piston rings are true EXCEPT
Answer:
A. Ring end gap must be measured prior to installation.
B. Rings must be installed facing the correct vertical direction.
C. Rings are installed on the piston using a ring compressor.
D. Ring end gaps must be staggered around the piston. The correct answer is C.
Rings are
installed on the piston using a ring expander; they are installed in the cylinder with
the piston
using a ring compressor.
, ASE A1- Engine Repair Questions and Answers with Verified Solutions
| Latest 2026 Update
Q: A manifold vacuum test is performed on an engine in a shop that is located
approximately 4000 ft. (1.2km) above sea level. With the engine at normal
operating temperature, the gauge reads a steady 15 in. Hg at idle. Which of the
following is indicated by this vacuum reading?
Answer:
A. Late ignition timing. B. Low compression. C. Vacuum leak. D. Normal operation.
The correct answer is D. If the shop was located at seal level, any of the other
answers might be indicated by this vacuum reading. But remember, atmospheric
pressure changes with elevation and vacuum readings must be adjusted accordingly.
As an approximation for ever 1000 ft. above sea level, remove one inch of vacuum.
If we correct for elevation, we can see that this engine would produce 19 in. Hg
vacuum at idle at sea level, which is within the parameters for normal engine
operation.
Q: An engine has a light metallic knocking noise during light engine loads,
however, when the
Answer:
cylinder
