ASE A5 BRAKES PRACTICE TEST -SECTION 1-
HYDRAULIC SYSTEM DIAGNOSIS AND REPAIR
QUESTIONS WITH CORRECT ANSWERS 2025-
2026
A spongy brake pedal may be caused by: CORRECT ANSWER Air in the hydraulic system
d-
Air causes a gap in the hydraulic fluid flow because the fluid has to compress the air before it ca
n apply the piston. This delay causes the spongy feel. The other choices do not affect this concern.
This question is not like the others. It has the word EXCEPT. For this question, look for the choice
that could NOT cause the described situation. Read the entire question carefully before choosing y
our answer. A vehicle has a very erratic brake pulling concern while applying the brakes. All of the
following items could cause this erratic pull EXCEPT:
Excessive tire pressure b. Four-
wheel alignment c. Seized caliper piston on the other side d. Steering gear problem
CORRECT ANSWER a. Excessive tire pressure
Excessive tire pressure is the exception because this fault will cause tire wear but not a pull. Low
or uneven tire pressure can cause a pull.
3. The brakes are being bled on an older vehicle equipped with a quick take up valve in the maste
r cylinder. Technician A says the quick take up valve must be depressed. Technician B says the brak
es on this vehicle cannot be bled. Who is right? CORRECT ANSWER Neither A nor B
-
Both technicians are wrong. The brakes on quick take up systems use the same bleeding procedur
e as those without this valve.
A power assist brake booster push rod that is to short will cause which of the following?
CORRECT ANSWER Excessive brake pedal travel
-
A short push rod length will have to travel farther for contact and result in excessive pedal travel.
, This question is not like the others. It has the word EXCEPT. For this question, look for the choice
that could NOT cause the described situation. Read the entire question carefully before choosing y
our answer. Excessive brake pedal travel with a firm brake pedal can be caused by all of the follow
ing issues, EXCEPT: CORRECT ANSWER Low brake fluid level
A low brake fluid level will not cause excessive brake pedal travel and a firm brake pedal. All of th
e others will cause excessive brake pedal travel and a firm brake pedal
The master cylinder fluid level is low on a vehicle. Technician A says the cause could be a brake o
ut of adjustment. Technician B says that one of the brake systems has failed. Who is right?
CORRECT ANSWER Both A and B
-
Technician A is right because blockage of the compensation ports will not allow the fluid to return
to the master cylinder reservoir and thereby cause the brakes to remain applied and drag. Excessi
ve free travel cause brake lag not drag
After the replacement of a master cylinder the brakes drag. Technician A says the compensation po
rts may be blocked. Technician B says excessive pedal free play could be the cause. Who is right?
CORRECT ANSWER
Technician A is right because blockage of the compensation ports will not allow the fluid to return
to the master cylinder reservoir and thereby cause the brakes to remain applied and drag. Excessiv
e free travel cause brake lag not drag.
Technician A says a brake fluid leak at the rear of the master cylinder can leak fluid into the maste
r cylinder. Technician B says oil leaks can be found by adding a dye to brake fluid that is visible un
der ultraviolet or black light. Who is right? CORRECT ANSWER Both A and B
A master cylinder has been replaced. In an overall bleeding sequence, which part should be bled fi
rst? CORRECT ANSWER Master cylinder
The master cylinder is always bled first and the wheels in order from the one farthest from the m
aster cylinder.
HYDRAULIC SYSTEM DIAGNOSIS AND REPAIR
QUESTIONS WITH CORRECT ANSWERS 2025-
2026
A spongy brake pedal may be caused by: CORRECT ANSWER Air in the hydraulic system
d-
Air causes a gap in the hydraulic fluid flow because the fluid has to compress the air before it ca
n apply the piston. This delay causes the spongy feel. The other choices do not affect this concern.
This question is not like the others. It has the word EXCEPT. For this question, look for the choice
that could NOT cause the described situation. Read the entire question carefully before choosing y
our answer. A vehicle has a very erratic brake pulling concern while applying the brakes. All of the
following items could cause this erratic pull EXCEPT:
Excessive tire pressure b. Four-
wheel alignment c. Seized caliper piston on the other side d. Steering gear problem
CORRECT ANSWER a. Excessive tire pressure
Excessive tire pressure is the exception because this fault will cause tire wear but not a pull. Low
or uneven tire pressure can cause a pull.
3. The brakes are being bled on an older vehicle equipped with a quick take up valve in the maste
r cylinder. Technician A says the quick take up valve must be depressed. Technician B says the brak
es on this vehicle cannot be bled. Who is right? CORRECT ANSWER Neither A nor B
-
Both technicians are wrong. The brakes on quick take up systems use the same bleeding procedur
e as those without this valve.
A power assist brake booster push rod that is to short will cause which of the following?
CORRECT ANSWER Excessive brake pedal travel
-
A short push rod length will have to travel farther for contact and result in excessive pedal travel.
, This question is not like the others. It has the word EXCEPT. For this question, look for the choice
that could NOT cause the described situation. Read the entire question carefully before choosing y
our answer. Excessive brake pedal travel with a firm brake pedal can be caused by all of the follow
ing issues, EXCEPT: CORRECT ANSWER Low brake fluid level
A low brake fluid level will not cause excessive brake pedal travel and a firm brake pedal. All of th
e others will cause excessive brake pedal travel and a firm brake pedal
The master cylinder fluid level is low on a vehicle. Technician A says the cause could be a brake o
ut of adjustment. Technician B says that one of the brake systems has failed. Who is right?
CORRECT ANSWER Both A and B
-
Technician A is right because blockage of the compensation ports will not allow the fluid to return
to the master cylinder reservoir and thereby cause the brakes to remain applied and drag. Excessi
ve free travel cause brake lag not drag
After the replacement of a master cylinder the brakes drag. Technician A says the compensation po
rts may be blocked. Technician B says excessive pedal free play could be the cause. Who is right?
CORRECT ANSWER
Technician A is right because blockage of the compensation ports will not allow the fluid to return
to the master cylinder reservoir and thereby cause the brakes to remain applied and drag. Excessiv
e free travel cause brake lag not drag.
Technician A says a brake fluid leak at the rear of the master cylinder can leak fluid into the maste
r cylinder. Technician B says oil leaks can be found by adding a dye to brake fluid that is visible un
der ultraviolet or black light. Who is right? CORRECT ANSWER Both A and B
A master cylinder has been replaced. In an overall bleeding sequence, which part should be bled fi
rst? CORRECT ANSWER Master cylinder
The master cylinder is always bled first and the wheels in order from the one farthest from the m
aster cylinder.
