you either have a bad master cylinder or you need to replace your brake pads if you hear a lot of squealing when you push down on the brake peddle in most cases that means you need to replace them unless you did recently then in most cases I would recommend bleeding the brakes there could be some air bubbles that are preventing proper pressure in your brake lines
Probable causes: Low or no fluid in reservoir; Worn brake pads/shoes; Air in brake lines; Leaking brake line.
The best way to know when your automobile needs brakes is when they start squeaking, grinding against metal, leaking brake fluid and the pedal going to the floor.
Vacuum brake booster is defective or the hose going to the booster is leaking.
No, Check the fluid level in the master cylinder. If empty look for leak in system, perhaps a broken brake line or leaking wheel cylinder or caliper. If equipped with drum type brakes, perhaps need adjustment.
it could be a lot of different factors such as master cylinder is leaking past seels, crack in a brake line, leaking wheels cyclinders or calipers, air in the brake system that will cause brake pedal to go to floor if it is hard and wont move could be a failed brake booster
chances are its a leaking brake booster or rear seal on master cyl.
If your brake peddle goes to the floor, you have lost brake fluid from your master cylinder in the engine compartment. Check your rubber brake hoses at each of your wheels, look for any signs of leaking brake fluid at your wheels, connections,lines, and master cylinder.
Leaks from where? If it's leaking around the pedal, you have a bad mastercylinder. If it's leaking at all, you have to fix that, then bleed the whole system. Not a major thing but I wouldn't drive it like that. if it fails completely, you won't have any brakes.
Master cylinder may be leaking, brake pedal may slowly fall to the floor when you are stopped with your foot on the brake.
Your pedal will go to the floor for a few reasons. First, your master cylinder may be defective and/or empty. The master cylinder will be empty for a reason. Any or all of the wheel cylinders may be leaking, the brake hoses may be leaking or broken, a steel brake line may be rusted through and leaking or broken. A loose fitting will cause a leak too but this is not likely the case on such an old car. I would suggest you fill the master cylinder, bleed the brakes and when done, look for leaks. If you don't find any leaks and the pedal still goes to the floor, the master cylinder is likely bad. Carl King http://www.classiccarauto.com
you either need a new brake master cylinder or your brakes need to be bled
Have your brake system checked immediately! (by a proffesional)