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> Bleeding Brakes - Can't Get Any Pedal Pressure
ThinAir
post Mar 19 2009, 07:06 PM
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Well, I've searched, but there are so many responses about bleeding brakes that it's almost impossible to sort through them... so I'll ask.

I replaced the front calipers on the '70 with a pair of those pretty ones from Eric. When I put the car up on stands for the job I had good brake pedal pressure. Now that the new calipers are installed and the lines reconnected I've bled the brakes. I blocked the reservoir vent. I use a Motive Power Bleeder.

I'm sure that I'm not getting any air out of the bleeders at the wheels, yet I have no resistance when I press the brake pedal - it just goes straight to the bottom.

It seems unlikely that the MC would go so suddenly, so I'm wondering what else it could be.

As always, this is work that is being done last minute to get my son's car ready for this weekend's Route 66 Ramble. Despite lots of trying, things never seem to get done well ahead of time!
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McMark
post Mar 21 2009, 08:03 PM
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I've definitely had MC seals suddenly fail. I've had some luck with closing all the bleeders, manically stomping the brake pedal in order to try and 'shock the system' and get stuck bubbles moving.

Bleeding brakes is my hell. (IMG:style_emoticons/default/devil.gif)
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ThinAir   Bleeding Brakes - Can't Get Any Pedal Pressure   Mar 19 2009, 07:06 PM
davesprinkle   Well, I've searched, but there are so many re...   Mar 19 2009, 07:43 PM
ThinAir   You've still got air in the master cylinder. ...   Mar 19 2009, 11:03 PM
davesprinkle   You've still got air in the master cylinder....   Mar 19 2009, 11:32 PM
ThinAir   B-- it'll save your marriage. Gee... that...   Mar 19 2009, 11:59 PM
Heeltoe914   :agree: : But also make sure you only go about 3...   Mar 19 2009, 08:09 PM
type2man   Yep, try not to push the pedal all the way down, b...   Mar 19 2009, 08:15 PM
mikez   Bleed, bleed, bleed....then sometimes you wait a d...   Mar 19 2009, 08:48 PM
6freak   I prefer the two man way.... REALLY so the truth ...   Oct 21 2009, 03:33 PM
underthetire   Believe it or not, you can actually open all the b...   Mar 19 2009, 09:34 PM
echocanyons   Are the bleeders up?   Mar 19 2009, 09:57 PM
Dave_Darling   Bleed the rear brakes first. You'd be amazed ...   Mar 19 2009, 10:22 PM
Sleepin   Looks like that might be what I have to try. I j...   Mar 20 2009, 01:23 AM
roadster fan   I have used the Motive power bleeder with good suc...   Mar 20 2009, 01:33 AM
ThinAir   I would definitely bleed the MC before starting t...   Mar 20 2009, 07:34 AM
davesprinkle   I would definitely bleed the MC before starting ...   Mar 20 2009, 09:16 AM
SLITS   Ernie .... crack the fittings at the MC and let it...   Mar 20 2009, 09:12 AM
6freak   [ This fills the MC if somehow you ran it out of ...   Mar 20 2009, 11:24 AM
ThinAir   Well, things have not gone well. Here's what ...   Mar 20 2009, 07:41 PM
Cire   Well, things have not gone well. Here's what...   Oct 16 2009, 10:21 PM
Heeltoe914   Just replace it and consider it a upgrade? But d...   Mar 20 2009, 08:12 PM
McMark   I've definitely had MC seals suddenly fail. I...   Mar 21 2009, 08:03 PM
PRS914-6   I have had great success with the Motive system. ...   Mar 21 2009, 11:21 PM
Vacca Rabite   Couple things to check. 1) when you are bleeding,...   Oct 18 2009, 12:08 AM
9146986   Did you install the calipers on the wrong sides? ...   Oct 18 2009, 08:46 AM
tod914   Maybe jack up the passanger rear, tap the caliper ...   Oct 18 2009, 08:55 AM
SLITS   I vaguely remember a parallel story where the cali...   Oct 18 2009, 09:17 AM
pcar9146guy   This thread started in March of this year.....Hope...   Oct 18 2009, 02:40 PM
Sleepin   Yes, this has been corrected and are working wonde...   Oct 18 2009, 04:14 PM
Krank   The first thing I always do when doing hydraulic b...   Oct 23 2009, 07:38 PM


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