Practice question

What is the primary cause of a 'spongy' or soft brake pedal feel in a vehicle?

  1. Worn brake pad friction linings.
  2. Air bubbles trapped within the hydraulic brake fluid lines.
  3. The emergency brake cable being adjusted too tightly.
  4. A rusted brake rotor surface.

Answer: B — Air bubbles trapped within the hydraulic brake fluid lines.

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