Spongy Brakes all of a sudden?

[Mr.PFloyd]

Well here it is. I changed my rotors today (took all of 1 hour ) And ever since i did that, my brakes feel a little spongy. What is weird is that i didn't touch the lines at all, and no fluid got leaked.
The brakes still stop good, it is just unusual to have this spongy feel.
What could have caused this?
Oh and i already bed in my brakes too
-Tom

 

[IJ.]

How old is the fluid?

 

[Mr.PFloyd]

How old is the fluid?

It was changed last summer when i did my whole swap thing.

 

[figgie]

What type of break fluid are you using (DOT 3, 4, 4/5, 5 etc)?

 

[MK3Brent]

Did you replace the pads with sponges?

 

[Shima]

Did you replace the pads with sponges?

hahaha...


did any air get into the brake line? could always just re bleed them? worth a shot :biglaugh:

 

[tlo86]

bleed brakes.

 

[Mr.PFloyd]

Did you replace the pads with sponges?

Har har har :biglaugh:

What type of break fluid are you using (DOT 3, 4, 4/5, 5 etc)?

I am using DOT 3

hahaha...


did any air get into the brake line? could always just re bleed them? worth a shot :biglaugh:

I didn't touch the brake lines at all. the whole reason i am wondering is how the air got in the lines... Nothing was touched as far as fluids go.

bleed brakes.

I will try that tomorrow then.

 

[mischief7m]

not trying to hijack or anything, but i just got in from doing my brakes.

pads, and had the rotors turned (lemme just say F**K whoever decided to use those little banana springs to keep the pads seated)

anyway, got them all done, bled, greased the pins as best i could without seperating the caliper, and got the wheels back on. and took it for a ride.

drove about 2 miles, and the brakes felt fine. stopped, and my friend said "DUDE I SEE SMOKE!!!" my worst nightmare, grabbed the extinguisher, and got ready, turns out it was just a little fluid from bleeding. but my wheel was far too hot to touch, never mind the rotor its self.

does anyone have a clue why?? or what to check?? i know i probably need to seperate the calipers and really grease the slides, but do you guys think that should fix it, or any other ideas?

thanks, and again, didnt mean to hijack just seemed better than starting a new thread

-Trevor

 

[mirage83]

I've had a caliper stick before after changing pads and bleeding the system. Something was screwy with caliper, had to have it thoroughly cleaned and rebuilt as the piston wouldn't retract at all after I applied the brakes the first time after the brake work.

May not be anything like what you're experiencing, but that's what I had to do to fix it.

 

[mischief7m]

mine werent dragging hard at all, i could push the car myself on flat ground. just dragging enough to make them pretty freakin hot

 

[ZoomZoomZoom]

Well here it is. I changed my rotors today (took all of 1 hour ) And ever since i did that, my brakes feel a little spongy. What is weird is that i didn't touch the lines at all, and no fluid got leaked.
The brakes still stop good, it is just unusual to have this spongy feel.
What could have caused this?
Oh and i already bed in my brakes too
-Tom

Exact same thing happened to my car. I went with the brembo/porterfields, never touched the lines. That first day the brakes were terrible, then it was fine for 2 months. Got new SS brake lines. I could hardly stop the car. Lines were bled numerous times, but it turned out to be a bad master brake cylinder. My guess it was going bad when I put the brembos/PFs on.

Here's the crappy news - this master brake cylinder is already going bad. Just recently the brake pedal starts to slowly sink while sitting at a light. I tell you, the stuff that carquest sells is just junk!