Brakes (A5)Question 48 of 120
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?
a.Technician A only
b.Both A and B
c.Technician B only
d.Neither A nor B
Explanation
Air is compressible, so it makes the pedal feel soft or spongy and reduces braking effectiveness; proper bleeding removes it. Technician B is wrong because air degrades rather than improves braking. Bleeding in the correct sequence restores a firm pedal.
Practice all 120 questions free — no signup required.
Related questions on this topic
- A brake pedal that slowly sinks to the floor while held under steady pressure most likely indicates:
- Technician A says a pulsating brake pedal is usually caused by air in the hydraulic lines. Technician B says it is usually caused by rotor thickness variation or excessive lateral runout. Who is correct?
- The primary purpose of a brake power booster is to:
- The main function of an anti-lock brake system (ABS) is to:
- A wheel-speed sensor signal that is missing on one wheel will most likely cause the ABS to:
- Brake fluid is hygroscopic, which means it:
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against ASE Automobile Certification Series (A1–A8) · How we review