Trouble with brake bleeding, I can't get any pressure in the system |
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Trouble with brake bleeding, I can't get any pressure in the system |
Lozgib |
Oct 22 2016, 10:52 AM
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#1
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Newbie Group: Members Posts: 5 Joined: 29-July 16 From: U.K. Member No.: 20,236 Region Association: None |
Hi. I'm new to Porsche 914 ownership so please go easy on me. I have owned vw splitscreen buses for 30 years and restored loads of them though.
I bought a California 914 a few months back that is running fine now but had been sitting for a number of years needing the brakes restoring as all four callipers had sized and master cylinder leaked. I replaced all four callipers with rebuilt OG units from a reputable USA supplier together with a new master cylinder. I've bled the system 4 times using the easy self pressure method and combined traditional two person method and also combined both together as described on forums. I get clear brake fluid at each wheel with no bubbles but I have no pressure at all at the pedal. It goes straight to the floor. I've read every brake thread on this and other forums and can't find a solution. I have not replaced the pressure regulator as they aren't available her in the uk but would that cause zero pressure? I'm thinking there may be an issue with one or more of the callipers. I've got no leaks I can detect on the system. I'm stumped and lost for what to try next? Any help would be appreciated. |
mgp4591 |
Oct 22 2016, 11:07 PM
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#2
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914 Guru Group: Members Posts: 5,382 Joined: 1-August 12 From: Salt Lake City Ut Member No.: 14,748 Region Association: Intermountain Region |
All good suggestions....
To start off, I'd clamp off all of the brakes at the hoses on each wheel using brake clamps (which actually are good to have for lots of reasons and can be purchased for not too much). This isolates the master cylinder from the calipers, then see if you've got pressure at the pedal. If not, you've got a bad m/c. If you've got pressure, start bleeding at the wheel furthest from the m/c, being the r.r., then the l.r, r.f., then l.f. That should eliminate each wheel in turn and you should be able to isolate which wheel is giving you issues. |
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