Finally installed discs on my bird. Great stopping power ! I bled the brakes when finished and went on a drive. Brakes workd ok but felt a bit spongy. So I decided today to bleed them again. THEY WONT BLEED! The rear brakes wont bleed . I got a littlle bit of fluid out but thats it. I didnt bleed them the first time so I decided to bleed them today and nothing. The front works fine when bleeding. I installed all new lines front to back . The master cylinder is a 78 Granada. I am using the original push rod out of the old master cylinder. I do have a rod for the new master cylinder.I push the pedal all the way to the floor and let it up and just a bit of fluid in the line. When I installed the lines I opened all bleeder screws and pumped until fluid began to seep out. I closed the bleeder screws and bled the front but not the rear. I know it is something simple but I am stumped at the moment. Any help is appreciated.

I bled the master cylinder before I installed it. The master cylinder is a reman unit.

55Birdman  Hickory NC

When I installed the lines I opened all bleeder screws and pumped until fluid began to seep out. I closed the bleeder screws and bled the front but not the rear. I know it is something simple but I am stumped at the moment. Any help is appreciated.

I have to admit I'm confused why you didn't bleed the rear. I think you are going to need to start at the master cylinder and bleed the rear lines (this should/could be your front reservoir). Then go to the rear and bleed the wheel cylinders. I've had this happen to me and it seems the master cylinder gets air locked so you have to bleed it first. GOOD LUCK

Ol'ford nutCentral Iowa

56 Vic w/292 & 4 spd.

Did you swap all wheels to disk, or just the fronts?  Is the master cylinder for the same application (disk/disk, disk/drum)?  Did you add a proportioning valve?

I had something similar happen a couple months ago. Bench bleeding seemed to be the answer.



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Lawrenceville, GA

I had a friend help me and when we got the disc installed I bench bled the M/C. I at his request opened the rear bleeder screws overnight and let "gravity" take over. The next day I pumped the brakes and all cylinders were seeping fluid. He bled the front because they were new .  The discs are front only with disc/drum master cylinder. No I do not have as of yet a proportioning valve. Should I re -bleed the master cylinder  and start over with the wheels? I didnt bleed the rear because they were spitting fluid when pedal was pressed.

55Birdman  Hickory NC

I didnt bleed the rear because they were spitting fluid when pedal was pressed.

This is why you have a soft pedal. You sucked air into line when you let up on the pedal.

If your brakes are working good and feel good you don't need a p-valve. If you do go with one, get one that is adjustable so you can dial it in for your set up.

Ol'ford nutCentral Iowa

56 Vic w/292 & 4 spd.

bled M/C on car . Rear only. a few bubbles not very large. After about 20-30 pumps no bubbles at all. Did front same way.will have to bleed brakes tonight have to go to Dr.

55Birdman  Hickory NC

I don't know how you set up your brakes, but usually the rear reservoir of the master cylinder goes to the front brakes and front goes to rear. It will take two people to pump and bleed. Pump the brake till you have some pressure and keep foot on pedal. Other person then opens bleeder and then shuts it while pedal is being depressed. You repeat this till no air bubbles and move to next wheel. Keep an eye on the master cylinder so it doesn't go low. That will put air back into line.

Ol'ford nutCentral Iowa

56 Vic w/292 & 4 spd.

Yes the rear reservoir is for the front brakes. I have a brake bleeder bottle that attaches magnetically to the body a line goes into the bottle with an attachment inserted into the bleeder screw. The pedal is depressed and brake fluid enters the bottle when you lift pressure off the pedal the fluid is drawn into the tube a bit . The tube in the bottle is immersed in brake fluid and no air enters the system. One man operation. Done it many times by myself. I am not as ignorant as you may think. I bled the brakes and the master cylinder. I thought all the air was out. When it would not bleed again I was lost at what could be the issue . Air in the system was not considered. If the re-bleeding of the master cylinder fixes the problem the causes and cure go into my memory bank for future use. If not ??????

55Birdman  Hickory NC

Tom, that comment wasnt directed at you. Old ford nut made the comment. I am 63 I work on my car alone and I bleed brakes one wheel at a time starting with passenger rear and work my way to the drivers front.The same way I have been doing it since I was 15. I know you wouldnt imply anything negative. If I directed my comment at you it wasnt meant to be. It was for the other guy. Hows that carb doing? Earl 

55Birdman  Hickory NC