Bleeding the brakes will flush that air out ... Next, make sure the bleeder valves can be loosened. You’ll need a box wrench that fits the bleeder bolt, as a crescent wrench or vise-grip ...

So you've swapped out your old, weathered brake ... bleeding is simply enough: Open your master cylinder, empty it of fluid, fill a syringe with fresh fluid, connect it to your caliper's bleed ...

Use brake fluid test strips or a pen tester to measure brake fluid quality, condition and color. Old or contaminated brake ...

Air in the brake system can make your brake pedal feel spongy and vague. You should flush the fluid every two or three years, ...