having to pump brakes - Team Camaro Tech
Brakes, Suspension & Steering Conversion questions, Steering & Handling

 
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post #1 of 11 (permalink) Old Dec 26th, 01, 12:58 PM Thread Starter
 
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Location: portland, TX, USA
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I need help! I just go my car ready for the road after a 11 year restoration. I have power front 4 caliper disk brakes and drum on the rear. The pedal will go to the floor inless you pump about 3 times, then i have a good pedal. I have to do this for every stop.
I have done all the bleeding(front,back, and master cylinder) I even did it with a vacuum pump today.
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post #2 of 11 (permalink) Old Dec 26th, 01, 01:05 PM
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it could be a bad wheel cylinder in one of the drums, a loose or leaking line, or a bad master cylinder. most of that went away when i replaced my cylinders, but i need to change the master too i think, becuase not all of it went away.
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post #3 of 11 (permalink) Old Dec 27th, 01, 03:45 PM
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Rodney
 
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if you pump up pedal and it holds without creeping down the rear could be way out of adjustment is this a disc brake conversion
or did this car originally come with frt disc
the 4 piston frt calipers can be difficult
to bleed if the pedal slowly leeks down after pumping up the master cylinder is bad
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post #4 of 11 (permalink) Old Dec 27th, 01, 04:32 PM
SSuperman
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MASTERCYLENDER
post #5 of 11 (permalink) Old Dec 27th, 01, 06:40 PM
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Joe
 
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I second that nomination! mastercylinder.

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70 Camaro 307cid(350soon) /350th ex. dark purple (dark blue soon) in. black
74 Trans Am 400cid/th400 ex. red in. red power windows tilt wheel
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post #6 of 11 (permalink) Old Dec 28th, 01, 06:11 AM
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Rich
 
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Maybe the calipers got crossed ? Left to right and right to left and the bleeder valves are pointed down (trapping air) instead of up? It happened to me and it drove me nuts till I found out the calipers got crossed somewhere before I bought the car. Just a thought ?
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post #7 of 11 (permalink) Old Dec 28th, 01, 08:05 AM
 
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I gotta, I just gotta!!!

Heck, it's either pump them brakes or pack along a Ford block to throw out as an anchor!!

Happy New Year!!! pdq67



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post #8 of 11 (permalink) Old Dec 28th, 01, 12:12 PM
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Would'nt a Ford block break as soon as it hit the ground the first time?
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post #9 of 11 (permalink) Old Dec 28th, 01, 06:33 PM
SSuperman
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If you had air in the lines the brake pedal would be "mushy" all the time....out of adjustment shoes cause low pedal, rare cases they will pump up....If the master has'nt been used for 11 years, 99.9999% sure that its gone.....
post #10 of 11 (permalink) Old Dec 29th, 01, 03:35 PM
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Lot of good posts......ummmm.....still waiting a reply as far as was this an "original disc brake system"....cause' if the proportioning valve was not swapped...(for a conversion).. .that will cause problems ...
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post #11 of 11 (permalink) Old Dec 30th, 01, 10:32 AM
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If you get a pedal only when you pump it and there are no obvious leaks, it's time to rebuild the master cylinder, especially if you pump it, get a pedal, and it slowly fades toward the floor as you maintain pedal pressure.

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