ASE Certification Exam 2025
Questions and Answers
Both b and c - ANSWER✔✔-Coolant should be tested for ________.
Proper color
Freezing point (temperature)
Specific Gravity
Both b and c
Both technician a and b - ANSWER✔✔-Two technicians are discussing a compression test.
Technician A says that the engine should be cranked over with the pressure gauge installed for "4
puffs." Technician B says that the maximum difference between the highest reading cylinder and the
lowest reading cylinder should be 20%. Which technician is correct?
Technician A only
Technician b only
Both Technician A and B
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
,Neither technician a nor b
Technician B - ANSWER✔✔-Technician A says that oil should be squirted into all the cylinders
before taking a compression test. Technician B says that if the compression greatly increases when
some oil is squirted in the cylinders, it indicates defective or worn piston rings.
Technician A
Technician B
Both technicians
Neither technician
Technician B - ANSWER✔✔-During a cylinder leakage (leak-down) test, air is noticed coming out
of the oil fill opening. Technician A says that the oil filter my be logged. Technician B says that the
piston rings may be worn or defective. Which technician is correct?
Technician A
Technician B
Both A and B
Neither A nor B
Any of the above - ANSWER✔✔-Leaking antifreeze can be what color?
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
, Green
Orange
Red
Any of the above
Open bleeder valves during filling - ANSWER✔✔-What precautions are needed to be performed to
help prevent air from getting trapped in the cooling system when replacing coolant?
Use the proper antifreeze as specified
Open bleeder valves during filling
Use premixed coolant
Wear protective gloves
All of the above - ANSWER✔✔-When replacing a water pump, be sure to _____________
Torque all fasteners to factory specifications
Use a new gasket/seal
Check that the accessory drive belt is properly aligned and adjusted to the proper tension
All of the above
All of the above - ANSWER✔✔-When using a scan tool to retrieve diagnostic trouble codes
(DTCs) the technician should also _________
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 3
Questions and Answers
Both b and c - ANSWER✔✔-Coolant should be tested for ________.
Proper color
Freezing point (temperature)
Specific Gravity
Both b and c
Both technician a and b - ANSWER✔✔-Two technicians are discussing a compression test.
Technician A says that the engine should be cranked over with the pressure gauge installed for "4
puffs." Technician B says that the maximum difference between the highest reading cylinder and the
lowest reading cylinder should be 20%. Which technician is correct?
Technician A only
Technician b only
Both Technician A and B
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
,Neither technician a nor b
Technician B - ANSWER✔✔-Technician A says that oil should be squirted into all the cylinders
before taking a compression test. Technician B says that if the compression greatly increases when
some oil is squirted in the cylinders, it indicates defective or worn piston rings.
Technician A
Technician B
Both technicians
Neither technician
Technician B - ANSWER✔✔-During a cylinder leakage (leak-down) test, air is noticed coming out
of the oil fill opening. Technician A says that the oil filter my be logged. Technician B says that the
piston rings may be worn or defective. Which technician is correct?
Technician A
Technician B
Both A and B
Neither A nor B
Any of the above - ANSWER✔✔-Leaking antifreeze can be what color?
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
, Green
Orange
Red
Any of the above
Open bleeder valves during filling - ANSWER✔✔-What precautions are needed to be performed to
help prevent air from getting trapped in the cooling system when replacing coolant?
Use the proper antifreeze as specified
Open bleeder valves during filling
Use premixed coolant
Wear protective gloves
All of the above - ANSWER✔✔-When replacing a water pump, be sure to _____________
Torque all fasteners to factory specifications
Use a new gasket/seal
Check that the accessory drive belt is properly aligned and adjusted to the proper tension
All of the above
All of the above - ANSWER✔✔-When using a scan tool to retrieve diagnostic trouble codes
(DTCs) the technician should also _________
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 3
