ASE BRAKE 2026 Exam
Questions and Correct
Answers | New Update
1. On a car with disc/drum brakes, the front brakes grab quickly when
light pedal pressure is applied. This problem could be caused by a bad:
A. Proportioning valve not
B. Pressure safety switch
C. Metering valve on on
D. Residual check valve - ANSWER ✔✔The correct answer is C.
The metering valve delays the flow of brake fluid to the front calipers
,until the pressure in the system rises to a point where the wheel cylinder
can overcome the tension of the brake shoe return springs. The purpose
is to have both front and rear brakes apply simultaneously. This prevents
the front brakes from locking up during light brake applications.
2. The driver of a vehicle with power disc/drum brakes says the brake
pedal moves slowly to the floor while maintaining pedal pressure at a
stoplight. What could cause this W.S problem?
A. Leaking primary piston cup in master cylinder
B. Leaking power brake booster
C. Leaking residual check valve in master cylinder
D. Internal leak in the combination valve - ANSWER ✔✔The correct
answer is A. If the primary piston cup in the master cylinder is leaking,
pressure will not build up ahead of the primary piston to increase
pressure to the rear brakes. The piston will then move forward until the
spring is com- pressed enough to move the secondary piston.
Consequently, this internal leak will cause the brake pedal to slowly drop
to the floor.
3. Which of the following would MOST LIKELY happen if the
measurements taken from the check shown above varied from the
manufacturer's specifications?
,A. Noisy brake operation
B. Brake grab or pull
C. Pulsating brake pedal
D. Low brake pedal - ANSWER ✔✔The correct answer is C. Poor
rotor parallelism (thick- ness variation) will cause a pulsating brake
pedal. This is due to the caliper piston movement that occurs as the pad
rides over the alternating high and low areas on the disc. This action
forces brake fluid to flow back and forth from the caliper to the master
cylinder, creating the pulsating pedal feedback.
4. What is the purpose of the master cylinder residual check valve(s) on
vehicles equipped with drum brakes?
A. Allows the driver to pump up the brakes
B. Prevents air from entering the hydraulic system
C. Prevents wheel lockup by reducing the hydraulic pressure
D. Reduces pedal pulsation by controlling hydraulic pressure -
ANSWER ✔✔The correct answer is B. Residual check valve(s) are
used on drum brakes to keep residual low pressure (slight static
pressure) in the brake system at all times even when the brake pedal is
released. This pressure (5-20 psi) keeps the lips of the wheel cylinder
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, piston cups tight against the cylinder walls to prevent air from entering
the system when at rest (brakes released).
5. A technician has just overhauled the front brakes on a vehicle with
front disc and rear drum brakes. However, when he attaches a pressure
bleeder (pressurized to about 25 psi) to the master cylinder, he cannot
get any fluid to come out of the disc brake caliper bleeder screws. Which
of the following is MOST LIKELY the cause?
A. Bad proportioning valve
B. Bad pressure differential valve
C. Proportioning valve release button not activated
D. Metering valve release button not activated - ANSWER ✔✔The
correct answer is D. A metering valve requires a minimum pressure
(typically between 75-125 psi) to open. At this point pressurized fluid
flows to the front calipers. Since the bleeder tank is only pressurized to
25 psi, fluid pressure is too low to open the metering valve during this
procedure. Therefore, when you use a pressure bleeder on a system
with a metering valve, you must manually keep the valve open by either
pushing the button in on the end of the valve, or pulling the stem
outward on the end of the valve.
Questions and Correct
Answers | New Update
1. On a car with disc/drum brakes, the front brakes grab quickly when
light pedal pressure is applied. This problem could be caused by a bad:
A. Proportioning valve not
B. Pressure safety switch
C. Metering valve on on
D. Residual check valve - ANSWER ✔✔The correct answer is C.
The metering valve delays the flow of brake fluid to the front calipers
,until the pressure in the system rises to a point where the wheel cylinder
can overcome the tension of the brake shoe return springs. The purpose
is to have both front and rear brakes apply simultaneously. This prevents
the front brakes from locking up during light brake applications.
2. The driver of a vehicle with power disc/drum brakes says the brake
pedal moves slowly to the floor while maintaining pedal pressure at a
stoplight. What could cause this W.S problem?
A. Leaking primary piston cup in master cylinder
B. Leaking power brake booster
C. Leaking residual check valve in master cylinder
D. Internal leak in the combination valve - ANSWER ✔✔The correct
answer is A. If the primary piston cup in the master cylinder is leaking,
pressure will not build up ahead of the primary piston to increase
pressure to the rear brakes. The piston will then move forward until the
spring is com- pressed enough to move the secondary piston.
Consequently, this internal leak will cause the brake pedal to slowly drop
to the floor.
3. Which of the following would MOST LIKELY happen if the
measurements taken from the check shown above varied from the
manufacturer's specifications?
,A. Noisy brake operation
B. Brake grab or pull
C. Pulsating brake pedal
D. Low brake pedal - ANSWER ✔✔The correct answer is C. Poor
rotor parallelism (thick- ness variation) will cause a pulsating brake
pedal. This is due to the caliper piston movement that occurs as the pad
rides over the alternating high and low areas on the disc. This action
forces brake fluid to flow back and forth from the caliper to the master
cylinder, creating the pulsating pedal feedback.
4. What is the purpose of the master cylinder residual check valve(s) on
vehicles equipped with drum brakes?
A. Allows the driver to pump up the brakes
B. Prevents air from entering the hydraulic system
C. Prevents wheel lockup by reducing the hydraulic pressure
D. Reduces pedal pulsation by controlling hydraulic pressure -
ANSWER ✔✔The correct answer is B. Residual check valve(s) are
used on drum brakes to keep residual low pressure (slight static
pressure) in the brake system at all times even when the brake pedal is
released. This pressure (5-20 psi) keeps the lips of the wheel cylinder
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, piston cups tight against the cylinder walls to prevent air from entering
the system when at rest (brakes released).
5. A technician has just overhauled the front brakes on a vehicle with
front disc and rear drum brakes. However, when he attaches a pressure
bleeder (pressurized to about 25 psi) to the master cylinder, he cannot
get any fluid to come out of the disc brake caliper bleeder screws. Which
of the following is MOST LIKELY the cause?
A. Bad proportioning valve
B. Bad pressure differential valve
C. Proportioning valve release button not activated
D. Metering valve release button not activated - ANSWER ✔✔The
correct answer is D. A metering valve requires a minimum pressure
(typically between 75-125 psi) to open. At this point pressurized fluid
flows to the front calipers. Since the bleeder tank is only pressurized to
25 psi, fluid pressure is too low to open the metering valve during this
procedure. Therefore, when you use a pressure bleeder on a system
with a metering valve, you must manually keep the valve open by either
pushing the button in on the end of the valve, or pulling the stem
outward on the end of the valve.
