What Causes Hard Brakes?

1 Answers
WestonLynn
07/29/25 12:18pm
There are several reasons why car brakes may become hard: 1. Vacuum pump failure: If the vacuum booster pump leaks or malfunctions, the force applied to the brake pedal (which is normally amplified by the brake booster) will require more effort. In such cases, braking becomes difficult and professional repair is necessary. 2. Post-shutdown issue: If you press the brakes after turning off the engine, this is also related to the brake booster. The brake booster only generates continuous vacuum when the engine is running. When the engine is off, it relies solely on the residual vacuum stored, which is typically only enough for a few brake presses. The system will return to normal after restarting the vehicle.
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