MICHIGAN SOS BRAKES MECHANIC CERTIFICATION
PRACTICE TEST | ALL QUESTIONS AND CORRECT DETAILED
ANSWERS | LATEST UPDATE (2026) | ALREADY GRADED A+
Internal leak in the master cylinder - CORRECT ANSWER -A common cause for the brake
pedal going to the floor when normal braking pressure is applied.
Faulty brake booster - CORRECT ANSWER -Hard/stiff brake pedal
Vacuum power brake booster test - CORRECT ANSWER -To test it, disconnect the vacuum hose
and observe engine idle.
Brake pedal pumping test - CORRECT ANSWER -Pump the brake pedal at least 4 times, hold
the brake pedal depressed, and start the engine to test the vacuum power brake booster.
Parking brake application - CORRECT ANSWER -Apply the parking brake and start the engine
as part of the vacuum power brake booster test.
Vacuum check at the booster - CORRECT ANSWER -Check for vacuum at the booster with a
gauge to test the vacuum power brake booster.
Depressurizing an ABS system - CORRECT ANSWER -The proper way includes opening the
bleeder valves.
Disconnecting the ABS fuse - CORRECT ANSWER -A method to depressurize an ABS system.
Pumping the brake pedal - CORRECT ANSWER -Pump the brake pedal at least 25 times with
the ignition off to depressurize an ABS system.
, ABS self-diagnostic test - CORRECT ANSWER -Running this test is one way to depressurize an
ABS system.
Dragging rear brakes - CORRECT ANSWER -The most likely cause after new linings installed
and drums machined is a stuck parking brake cable.
Warped drums - CORRECT ANSWER -A possible reason for rear brakes dragging after new
linings are installed.
Improperly adjusted brake shoes - CORRECT ANSWER -A likely cause of rear brakes dragging
after new linings and machined drums.
Leaking wheel cylinder - CORRECT ANSWER -A likely cause for low brake fluid levels
observed during inspection.
Faulty master cylinder - CORRECT ANSWER -Another possible cause for low brake fluid
levels during inspection.
Air in the brake lines - CORRECT ANSWER -A potential reason for low brake fluid levels
observed by a technician.
Warped brake rotors - CORRECT ANSWER -A condition where the brake rotors are not flat,
causing uneven braking.
Contaminated brake fluid - CORRECT ANSWER -Brake fluid that has been contaminated with
moisture or debris, affecting braking performance.
Internal leak in the master cylinder - CORRECT ANSWER -A failure in the master cylinder that
allows brake fluid to leak internally, reducing braking efficiency.
PRACTICE TEST | ALL QUESTIONS AND CORRECT DETAILED
ANSWERS | LATEST UPDATE (2026) | ALREADY GRADED A+
Internal leak in the master cylinder - CORRECT ANSWER -A common cause for the brake
pedal going to the floor when normal braking pressure is applied.
Faulty brake booster - CORRECT ANSWER -Hard/stiff brake pedal
Vacuum power brake booster test - CORRECT ANSWER -To test it, disconnect the vacuum hose
and observe engine idle.
Brake pedal pumping test - CORRECT ANSWER -Pump the brake pedal at least 4 times, hold
the brake pedal depressed, and start the engine to test the vacuum power brake booster.
Parking brake application - CORRECT ANSWER -Apply the parking brake and start the engine
as part of the vacuum power brake booster test.
Vacuum check at the booster - CORRECT ANSWER -Check for vacuum at the booster with a
gauge to test the vacuum power brake booster.
Depressurizing an ABS system - CORRECT ANSWER -The proper way includes opening the
bleeder valves.
Disconnecting the ABS fuse - CORRECT ANSWER -A method to depressurize an ABS system.
Pumping the brake pedal - CORRECT ANSWER -Pump the brake pedal at least 25 times with
the ignition off to depressurize an ABS system.
, ABS self-diagnostic test - CORRECT ANSWER -Running this test is one way to depressurize an
ABS system.
Dragging rear brakes - CORRECT ANSWER -The most likely cause after new linings installed
and drums machined is a stuck parking brake cable.
Warped drums - CORRECT ANSWER -A possible reason for rear brakes dragging after new
linings are installed.
Improperly adjusted brake shoes - CORRECT ANSWER -A likely cause of rear brakes dragging
after new linings and machined drums.
Leaking wheel cylinder - CORRECT ANSWER -A likely cause for low brake fluid levels
observed during inspection.
Faulty master cylinder - CORRECT ANSWER -Another possible cause for low brake fluid
levels during inspection.
Air in the brake lines - CORRECT ANSWER -A potential reason for low brake fluid levels
observed by a technician.
Warped brake rotors - CORRECT ANSWER -A condition where the brake rotors are not flat,
causing uneven braking.
Contaminated brake fluid - CORRECT ANSWER -Brake fluid that has been contaminated with
moisture or debris, affecting braking performance.
Internal leak in the master cylinder - CORRECT ANSWER -A failure in the master cylinder that
allows brake fluid to leak internally, reducing braking efficiency.
