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

Stop if the bleeder valve is frozen or rounded over ... A leak in any brake hydraulic circuit part (disc brake caliper, wheel ...

If you can’t turn the bleeder valves without breaking them off, you may need to replace the brake calipers or wheel cylinders. These are tiny, hollow bolts, so be careful with them! They’re ...