When should a hydraulic brake pedal feel firm with the engine running?

A hydraulic brake pedal should feel firm with the engine running when it is no less than one to two inches from the floor. This is because hydraulic brakes are designed to deliver a consistent and reliable braking force that provides the driver with adequate feedback when the brakes are applied. A firm pedal indicates that the hydraulic system is functioning properly and that there are no leaks, air in the system, or component failures.

If the pedal feels firm but requires a push that results in a distance greater than one or two inches from the floor, it may suggest that the brake system is not functioning optimally. This typical range ensures that the brakes engage effectively without excessive travel that could lead to a loss of control while braking. Therefore, feeling a firm pedal within this designated distance reflects the system's proper adjustment and hydraulic pressure.

While a pedal that engages immediately from the floor might seem desirable, it can indicate that the system has issues, such as misadjusted components or serious hydraulic problems. A pedal located above the dashboard would not be functional for safe driving, and the expectation for a response within five seconds does not accurately represent the guidelines for proper brake pedal feel and functionality.