Mark,
I would first rebleed the brakes as it sounds like air is back in the lines.
When you rebleed notice which, if any, corner is giving out the most air
bubbles. Then do a thorough inspection of the brake lines and calipers,
clean up any excess fluid, note condition of your driveway or garage floor,
and just start pumping until the sponginess comes back. If it does look for
any telltale fresh leaks on the floor or on the brake components. It might
provide the answer.
Did you do anything else to the brakes? I presume you replaced the seals
when you replaced the pistons. Were the caliper halves unbolted during your
rebuild? What was the condition of the piston bores in the calipers? Were
all four corners bled or just the front?
Greg Dito
CD6250L
----- Original Message -----
From: "Mark Bullard" <mbullard@verizon.net>
> I've just recently replaced the pistons in my front calipers and replaced
the
> pads. After bleeding the brakes, all seems fine until I go through a
couple
> of good hard stops and then the pedal goes to the floor. I've bled the
brakes
> a couple of times now and it continues to work for a while and then goes
back
> to being very spongy.
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