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Squishy brakes.

Old 04-21-2007, 04:11 PM
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Unhappy Squishy brakes.

I decided to change my brakes today when i heard scratching, obviously the sign that the pads are worn, correct? not in my case. apparently they were just seated weird, cuz the scratchy sound was only once every 10 miles or so. i took off the wheels and top piece of the caliper and the pads were fine. i forget when i replaced my brakes last, but they looked no more than 1/10th used. i put one side on fine, but the right side i used a c-clamp to push the piston back in. get in for a test drive, and the brakes get hard after a few pushes (with the engine off). i start the engine and do the same, but the pedal is constantly squishy, and feels as though the piston isnt going anywhere. after checking the bleed screw and other checks, i realize that everything looks fine. i jack it back up and take off the right tire. start it up, the brakes feel fine again. once i put the tire back on and test drive it, the brakes are squishy. my dad (a mechanic for the military) says that since its a floating caliper, maybe i screwed something up by finish tightening the wheel after its already lowered. fix my habit, same thing. any ideas? btw, i DID NOT replace the pads cuz they werent used much.

Last edited by neville610135; 04-21-2007 at 04:14 PM.
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Old 04-21-2007, 06:03 PM
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you bled them right? not just open and closed the bleed screw?
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Old 04-21-2007, 09:47 PM
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yeah. the funny thing is, from the first squirt, liquid came out. it wasnt like it was full of air. dunno, maybe ill go through the works, just like i would change them, but put it together all normal. maybe its just cuz i took it off, and pushed it in, but the piston didnt have to move out any more. maybe its just a f*** up with pressure. ill let you know
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Old 04-25-2007, 11:04 AM
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i procrastinated and finally changed them today (actually got used to the squishiness) and found the same problem. I had filled so much brake fluid from last time, it came spewing out when i pushed the piston in, and thought that was the problem, but after a test drive, i noticed it wasn't. Same thing as last time. with the tire off, brakes worked fine, but once i tightened the lugs, the brakes were constantly squishy. dunno whats up.
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Old 04-25-2007, 11:06 PM
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Maybe your brake lines are about to go to ****.

Squishy brakes =
****ty Lines.
Air in Lines.

Maybe it's just me, but I'd replace the old rubber hose lines with at least new rubber hose lines.

I assume you completely took out all the brake fluid and started from scratch?
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Old 04-25-2007, 11:50 PM
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no, i didnt think it would be necessary, cuz this problem only occurred once i took off the caliper, in an attempt to change the brakes. i guess draining the lines is my last option short of replacing them.
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Old 04-27-2007, 11:20 AM
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Are you running stock brakes? or are they 4 piston 3Z or skyline calipers?

I had that issue too when I first installed my R32 GTR calipers in, but it since has corrected itself (just have to get use to the abs releasing the pressure when I need the fronts to lock... but that is what abs is for, to NOT let it lock up.)

I am upgrading to the Z32 brake booster, master cylinder etc for future applications. I may even disable abs if it is no longer used as a daily which is unlikely.
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Old 04-29-2007, 11:34 PM
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im running stock everything but rotors, but they are OE fit, so shouldnt make a difference. i DO NOT have ABS either
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Old 04-30-2007, 07:09 PM
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Check all the connections, see if there is a possible leak. Start from the master cylinder all the way out to each caliper.

If there are no problems, it maybe internal with the master cylinder or brake booster. If it aint that either, your car really hates you for some odd reason and its PMSing to the point that it wont tell you... ever!
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Old 05-22-2007, 01:52 PM
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flush out the fluid. brake fluid is (umm, i forget the word, it absorbs moisture)
that moisture allows the brake fluid to be compressed (which causes squishy pedal feel) if you have a can of brake fluid that you already opened, go get a new one.
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