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What Causes Soft Brakes and Poor Stopping After Changing Brake Pads?

2 Answers
TeaganLynn
09/06/25 4:32am
Reasons for soft brakes and poor stopping after changing brake pads: 1. The surface of the brake pads is relatively flat; 2. The contact area with the brake disc is small, resulting in lower braking force. Brake maintenance methods include: 1. High-temperature resistance protection to prevent corrosion of the brake system; 2. Cleaning oil stains from the brake disc, brake drum, and brake pads to ensure good heat dissipation of the brake disc; 3. Regularly replacing brake fluid; 4. Periodically checking the thickness of brake pads or brake shoes. Methods to inspect car brake pads: 1. Remove the tire and brake caliper; 2. Take off the brake disc. Brake pad replacement steps: 1. Open the engine compartment to check the brake fluid level to prevent overflow during replacement; 2. Remove the wheel where the brake is located; 3. Unscrew the brake caliper bolts and remove the brake pads; 4. Install new brake pads, tighten the guide bolts, and complete the replacement.
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DiJustin
09/18/25 4:26am
I just encountered this situation last month! After replacing the brake pads, I felt like I had to press the pedal really deep to stop the car. The most common issue is air getting into the brake lines during pad replacement, just like bubbles in a straw making it hard to suck up water. If the mechanic didn't fully bleed the air from the pedal when purging the system, the brakes would feel spongy. It could also be that the old brake hose started leaking fluid after being disassembled and reinstalled, or that the new brake pads still had their protective wax coating that hadn't been worn off. Remember to go back to the repair shop immediately and have them re-bleed the system: pump the brake pedal 20 times in a row, then loosen the bleeder screw while holding the pedal down, and tighten it once you see no more bubbles. Don't ignore it—my neighbor rear-ended someone last time because of this very issue.
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