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By 55Birdman - 16 Years Ago
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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.
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By Ol'ford nut - 16 Years Ago
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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
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By Ys Guy - 16 Years Ago
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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?
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By charliemccraney - 16 Years Ago
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I had something similar happen a couple months ago. Bench bleeding seemed to be the answer.
http://www.y-blocksforever.com/forums/Topic25673-3-1.aspx
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By 55Birdman - 16 Years Ago
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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.
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By Ol'ford nut - 16 Years Ago
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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.
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By 55Birdman - 16 Years Ago
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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.
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By Ol'ford nut - 16 Years Ago
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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.
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By 55Birdman - 16 Years Ago
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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 ??????
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By 55Birdman - 16 Years Ago
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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
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By rmk57 - 16 Years Ago
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I had the same sort of problem with my 57 Custom, I couldn't bleed the left front. It turned out to be the rubber brake hose to the
wheel cylinder, it was almost completely plugged. So I replaced all three, now everything is fine.
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By paul2748 - 16 Years Ago
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I would check the rubber line going to the rear brakes. If its old, replace it. They go bad from the inside (ply separation, or in my case, was completely plugged. I didn't even realize that it was plugged as I just got the car and it stopped (but not as good as when I replaced it).
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By Moz - 16 Years Ago
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earl dual m/cyl usually have a valve in them in case of a failure in one of the systems the valve shuts it of so you stll have some brakes. sometimes when bleeding that can happen stomp down on the brake pedal hard a couple of times then see if the rears will bleed.
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By 55Birdman - 16 Years Ago
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OK today I bled the M/C again. I went to the rear cylinders and the passenger side started to flow as soon as I opened the bleeder screw. But, I only got a very small amount of fluid when it stopped. The drivers side wont even show a drop of fluid. I disconnected the brake line at the junction block pumped the brakes and nothing happened except me exerting some energy. One would think there is air still in the lines or a blockage someplace. since the rear brakes on a bird only have 1 flexible line and the passender side worked a bit and none on the drivers side can I say blocked line there? I am going to go borrow a hi-tech brake bleeder and use it and see what shows up. any comments welcome or stop by for a visit. Thanks Earl
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By Ol'ford nut - 16 Years Ago
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That was not my intention and there is no mention of anyone being ignorant. We are all here because we work on our cars and at times run in to trouble. Age has nothing to do with it. I am 62 and work alone in my garage many times. I've been working and learning about these Fords since 1963 when I pulled the flathead out of my 50 and put in a y-block. Though I may never meet any of you I hope to make many friends, share thoughts and solve some issues at times. Hope you have your brake problem solved.
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By Ol'ford nut - 16 Years Ago
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If all fails take off lines to rear starting a mc and hit them with air pressure. I have to ask this next question, only because I've seen people do it. I noticed in another thread you were replacing lines when you put the discs on. You didn't put teflon tape on the threads did you. I knew a guy that did and some of the excess went into the line and plugged it. Again, good luck
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By Ys Guy - 16 Years Ago
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At this point, I'd say it's time to exchange your rebuilt MC for a different (preferably new) one. It wouldn't be the first time one of those units arrived nearly DOA. You successfully bench bled it, so it worked at least for a short time. Pull it off and try bench bleeding again. I'm guessing you won't see a strong flow from the front port this time.
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By 55Birdman - 16 Years Ago
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Bench bled it. Went to rear and started at passenger wheel. Nothing coming out Drivers side same. Took bleeder screws out and nothing. took line to each wheel off and nothing . disconnected rubber hose nothing . went to line going to hose and fluid a plenty. replaced hose and NOW I GOT BRAKES. thanks to all for input. Old ford nut I apologize to you . When I read your response I wasnt in a good frame of mind and took it the wrong way. Didnt mean to insult you. I'm over it now and I hope you are. I was working on my cars brakes some time ago and had just got started and replaced the lines up front and had to stop due to health reasons. Had to battle that demon a while and finally got around to finishing. No teflon tape ever on brake lines for me. Thanks again to all you guys. Earl Dagenhart
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By 55Birdman - 16 Years Ago
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I'm glad its fixed also. My hands hurt due to arthritis. Taking the day off tomorrow. If you go back to the 4bbl carb let me have first bid on the 3x2s. I sold mine and put on a Mummert manifold and carb. Really miss them.
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By 55Birdman - 16 Years Ago
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Tom, sent e-mail but if you dont get it e-mail me at wpccgrad@hotmail.com Thanks Earl
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