i dont have brakes now

[68fordf100]

My 68 f100 has no brakes. U can press the brake pedal an release with no effort at all. I don't have power brakes.yet anyway. But I checked the master cylinder an no leaks around it but I took the cap off an no brake fluid. The back little section was wet but rusted. So I added some fluid pumped the brakes but still nothing. So I took off the right front tire an everything was working fine an I sprayed some penetrate on it to ensure no stickyness. I still have to check the other three but what do I look for? Would one be seized an affect the pedal like this. Please help.

[fordman]

look on the back side of the tires for wetness. after the truck has sat overnight. also look along the frame rails and crossmember fo rwet spots around the brake lines. when you find the wet spots you will find the leak. alos look under the dash at the back of the master cylinder to see if it is wet back there.

[Davids68F250]

Did you bleed the brakes?

[Mach428]

If you ran the master cylinder dry, air was introduced into the master cylinder piston, which will require you to bleed the master cylinder before it will pressurize the brake system. To do this, remove the brake lines from the MC and install bleeders. These are available at most parts stores and are simply brass fittings with connections for rubber hoses. Fill the MC with fluid and place the ends of the rubber hoses from the bleeders BELOW the fluid level in the MC and pump. Once all the air bubbles are gone from the fluid level in the MC, you can re-connect the brake lines and bleed the system.

You do; however, have other problems if the the MC was dry because there's obviously a leak somewhere

[68fordf100]

I didn't bleed the brakes yet I will bleed the brakes my friends say I need to crack open all the bleeder valves an let fluid gravity bleed out. Then fill it an bleed each drum. I didn't see wetness under the dash and the ms is dry also

[cdeal28078]

Look under the left mat to make sure the fluid isn't leaking there.
Gravitly bleeding like your friend suggested works pretty good when you are bleeding brakes alone but you still might have to bleed the master cylinder to get good brakes. Like also stated you have to find where the old fluid went
clint