Brakes (A5)Question 47 of 120
A brake pedal that slowly sinks to the floor while held under steady pressure most likely indicates:
a.Air in the lines only
b.Warped rotors
c.A failing master cylinder (internal leak)
d.Glazed brake pads
Explanation
A pedal that gradually falls under steady pressure indicates fluid bypassing internally in the master cylinder past worn seals. An external leak would lose fluid visibly. Replacing the master cylinder and bleeding the system restores a firm pedal.
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- Technician A says a spongy brake pedal is commonly caused by air in the hydraulic system. Technician B says air in the lines increases braking power. Who is correct?
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