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Car: 95 Camaro, swapped in used 2002 front calipers
Bled until no air, tried gravity, two-person method, and both.
Here is where I am at:
If I take vice grips and clamp off the front hoses, the pedal is high and rock solid. Once I take either clamp off, the pedal stays solid until I pump it. Each pump makes the pedal go lower and lower. It seems like its sucking in air from somewhere after the hoses. Fluid does not appear to go low, the pedal just gets soft and close to the floor after pumping.
The seal between the hoses and caliper appear tight, no drips, no pooling of fluid. Bleeders are on the top, facing up.
My next step is to get a helper and have them push the pedal, while I put my ear to each caliper and try to here/see a leak. Anyone have any experience or advice on this?
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I have no idea what the “gravity method” is, but it sounds like you have air in the calipers. I wouldn’t recommend ever putting a clamp on the brake hose because that could ruin them.
Are the fluid chambers in those calipers bigger? That may or may not be your issue. Often upgrading brake system often requires a bigger master cylinder.
Other low brake pedal symptoms can also come from contaminated brake fluid, pads/shoes not adjusted correctly or brake pedal mis-adjustment.
Does the rear of that vehicle have drums? If so did you try adjusting them? If there rear rotors, did you try activating the parking brake several times?
Rears are disks.
Lots of write ups for swapping 93-97 front brakes for 98-02, the 95 master should be fine, but I’ll keep that in mind. I’ll also try the parking brake adjustment.
I think I narrowed it down to a passenger side issue. I rebled the driver side, kept the passenger rubber hose clamped, and the pedal was firm. Removed the clamp, bled the passenger, but could never get the pedal to firm up. Is there anything I should be looking for on the caliper?
As for clamping, Im just going by the videos, and desperation to figure out where the air is getting in. Car has been off the road for a while now for a bunch of stuff, this is just the last thing to finish up.
you mite have acidently pushed air to the rears,ive had a lot of cheveys.theirs a seqence to bleeding the whole system ,i cant remember exactly what it is but generaly left front right rear {its furthest from the master cylnder} with always sense to me. left rear rite front, then repeat , then just the rears ending with the fronts .sometimes its taken me several times to here tat sound of air comin out {fritttt}. hope this helps you, but i really hope u allready got it figured out so u dont have to go through this oily proceedure
Turns out fluid is seeping from the fittings at the master that connect the hardlines. Noticed it by accident when cleaning things off.
Tried to tighten, but the fittings are mangled by previous owner. Tried tightening with vise grips but no go. Going to get those lines replaced and go from there. Thanks for the help.
My buddy’s shop has better vice grips, half turn and the leak stopped. We purged the air using the other sides of the lines at the porpotioning valve/ABS block and now the brakes rock! The bigger rotors and dual piston calipers make a huge difference.
Now I just need an alignment and I can call the front end rebuild complete, thanks for all the help and the vids, couldn’t have done it without them!
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