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Old 08-10-2006, 01:03 PM
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tri5ernie

Good afternoon, I have a problem I need assistance with. I have a 1955 Chevy 2 dr. post, that has 4 wheel disc brakes. The front brakes are after market and the rear are from a 79-81 pontiac trans am. The car never has had a good pedal, but I just figured since they were power it wouldn't have a full pedal. Since the left rear was making some noise, I decided to replace rotors, calipers & pads. I have bled the lines, but cannot get a pedal. Is there something else that can be causing this, such as the booster??
Any help will be appreciated.

Ernie

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Old 08-10-2006, 01:28 PM
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Just some thoughts;

Were the lines bled by the pedal, or power-bled. Some older master cyl. need to be 're-bled' to work correctly, but only if the lines were completely emptied when the calipers were switched out..

Since this is a 'hybrid' 4whl disc break setup - check for a brake proportioning valve in the system. While the system was bled(emptied, and then refilled during the bleeding), the valve could have helod some air bubbles in the lines...

If you only bled the back lines, air can still move to the shorter lines of the front brakes...
If the bleeding was done on a unlevel surface, air can move to the highest point - especially if the master cyl is the highest point...


Just my 2 cents..

Good luck!
dB
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Old 08-10-2006, 01:49 PM
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Disc brake issues

Thanks DB, I'll try bleeding again.

Ernie
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Old 08-10-2006, 02:42 PM
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Get some speed bleeders and pump away until nothing but fluid comes out. Makes the job a snap.

Vince
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