Brake pedal goes to floor no fluid leak could it be the master cylinder?

/p><div>yes! its highly likely your master cylinder is bad. a good way of testing<br>is to remove the reserve lid and have someone step on the brake pedal<br>in at a normal speed if you can see a small <span class="">geyser</span> come up from the reserve<br>most likely its <span class="">OK</span> if not seals inside are worn out replace also check the disc<br>brake to see if they are worn out this to can cause the same symptoms<br></div>