Brakes (A5)Câu 47 / 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
Giải thích
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.
Luyện miễn phí toàn bộ 120 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- 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?
- 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:
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với ASE Automobile Certification Series (A1–A8) · Quy trình kiểm tra