My break pedal goes to the floor - 2001 Hyundai Accent

https://rxmechanic.com/brake-pedal-goes-to-floor-when-engine-running/

https://www.fordf150.net/forums/viewtopic.php?t=127955

You can bleed the system all you want and STILL have the pedal go to floor unless the master cylinder was bench bled in a vice BEFORE it was put on the vehicle. ALWAYS bench bleed a master cylinder before you put it in service. If you don't, you'll never get the pedal off the floor.

If you break fluid level is correct and your break pedal goes down to the floor means that your master cylinder is going bad and you might loose your breaks completely if not checked or replaced. Your breaking system is down to the last O ring inside the master cylinder, once that rubber O rings goes you will not have any breaks at all. Master cylinders have a number of rubber O rings that work like a plunger or piston that produce pressure within the breaking system. When the first one wears down due to age, your pedal begins to loose break pressure and you have to pump your breaks several times to gain breaking. You are now down to the last rubber O ring and a warning that your master cylinder needs to be checked. You can still use your breaks but only for a few days before the other rubber O ring gives out too. Once both O rings give out you completely loose your breaks.

you either have a busted break line or your master cylinder needs to be replaced. check around all wheels for fluid leakage , If no fluid seen check to see if the cylinder is full , If mot fill it and pump the breaks and look again for fluid leakage.

Usually when there are no fluid leaks and the brake pedal goes to the floor it's because the master cylinder has failed.

After you change brakes you need to bleed air from the brake lines what you need to do is find the bleeder valve its usually rite beside where the brake line goes in the calipers and looks like a grease fitting get someone to pump the brake pedal 3 or 4 times and hold it while someone else loosens the bleeder valve to drain the air out keep the pedal mashed until you get the bleeder valve tightend back up . Do each wheel until fluid comes out check brake fluid while doing this so it doesnt run out. Hope this helps

you could have air in your lines you may have to bleed the lines or set your break peddel.

check the fluid level in the slave cylinder, near the master cylinder where break fluid goes in, if it is empty, fill it with hydrolic fluid...you may have to bleed the lines at the tranny if you ran it out which it sounds like.

sounds like you have a worn set of park break shoes. they are located inside /behind the read rotors. if you remove the rotor and the shoes look fine then you can adjust them with the little star gear located on the bottom of the brake shoes.

Hello sir my system is not working proply. what to do tell me