brakes are pissing me the fuck off
 

my 89 civic is pissing me the ---- off.

i bought the car knowing there was practically no braking pressure. this is how it goes:

first pump of the pedal is crap and the pedal sinks to the floor, hardly any force but i notice the right rear grabs a little. second pump is better but goes a little less than half to the floor, and the third pump is like normal. but the pedal pressure drops again the next time i use them. with the engine off, the pedal pressure is perfect, exactly how it should be.

i replaced the master, front pads, rotors, bled the master twice and the full system once. there is no leakage, the master is not losing any fluid. the rubber lines look good as well as the hard lines. but the issue is still the same.

any ideas?

Re: brakes are pissing me the fuck off
 

Brake booster

Re: brakes are pissing me the fuck off
 

front wheel bearings or loose axle, the rotor is knocking the pads back.

I'm guessing RF.

Re: brakes are pissing me the fuck off
 

nope, bad brake booster = stiff pedal and idle issues due to vacuum leak, wanna come replace mine?

Re: brakes are pissing me the fuck off
 

it will happen at a standstill though. but i do have a really bad front left bearing.

Re: brakes are pissing me the fuck off
 

time for some newer knuckles......

Re: brakes are pissing me the fuck off
 

yeah my crx has shitty brake pressure not as bad as your and i know my knuckles/bearings (mostly r/f)are fucked

Re: brakes are pissing me the fuck off
 

also, make sure that the check line is installed right in the vacuum line. The one that goes to the brakes booster.

Re: brakes are pissing me the fuck off
 

cilper could be upside down >:D

Re: brakes are pissing me the fuck off
 

that would cause the pedal to sink?

Re: brakes are pissing me the fuck off
 

have you checked the rear wheel clyinders for the drum brakes? if pedal is going to floor fliud is going somewhere... check rear

Re: brakes are pissing me the fuck off
 

You sure you bench bled the master cylinder properly before installing it?

Re: brakes are pissing me the fuck off
 

yep, used the plastic fittings with the clear hose submerged in fluid in the resiv. and pumped it slowly until there were no bubbles.

Re: brakes are pissing me the fuck off
 

Ive experienced a car whose engine was hydrolocked, replaced, and then exibted the symptoms your describing because the booster was full of water. That was one car and I dont think yours is such an issue.

Gonna have to agree with bone on this one, worn wheel bearing is far more likely than anything else if you dont have any fluid leakage at any point in the system.

Re: brakes are pissing me the fuck off
 

the only thing with that... would a bad wheel bearing cause this issue when the car is stationary?

my front left wheel bearing is pretty bad, but i dont see how it would affect the pedal pressure at a standstill. although, i did bleed the entire system again today and still the same issue. but i noticed the front left pads did not have the same amount of contact the front rights did. the driver side had about an 1/16"of a gap between pad and rotor while the passenger side had full contact. i'll replace the bearing and make an update.

Re: brakes are pissing me the fuck off
 

is the problem the 1st time when its' stationary, then fine every time after until you move it? then yes.

Your bad bearings allow your rotor to wobble more and push the pads in further on that caliper. Your pedal feel is lost as you take up that space.

Bone already explained this to you.

Re: brakes are pissing me the fuck off
 

the pedal will hold pressure when the engine is off.

i'll start the engine, the first pump will go to the floor, the 2nd is better, but not much. the 3rd pump is normal. after i let off the pedal and let the pressure build back up in the master for a second or 2, the same thing will happen without moving.

but when i push the pedal fully at a standstill the car moves like up or forward, i cant tell if its the momentum force of my foot pushing the pedal, or the caliper squeezing the rotor straight.

maybe this helps:
back to the beggining, during the 1st pump while driving, i can feel the front left and right rear grab(the ass end goes right). during the 2nd and 3rd pump, always normal.

Re: brakes are pissing me the fuck off
 

did you bleed each wheel?

Re: brakes are pissing me the fuck off
 

of course.

right rear, left front, left rear, right front

Re: brakes are pissing me the fuck off
 

aren't you supposed to start with the farthest and get closer to the brake booster. RR LR FR FL???

Re: brakes are pissing me the fuck off
 

your gay right???????????

Re: brakes are pissing me the fuck off
 

the line at the M/C isnt still wet is it? Possibly it didn't seal. Or you just got a shitty M/C

Re: brakes are pissing me the fuck off
 

That's what my dad told me when I did my brakes. Worked perfect for me, I had a similar brake problem.

Re: brakes are pissing me the fuck off
 

Did you bench bleed the master cyclinder before you put it on?

Re: brakes are pissing me the fuck off
 

put the car on jackstands in the front or just a jack with the wheels on it and see what happens

and how are you bleeding the brakes? are you pumping the hell out of them then cracking the bleeder my bet is on effed bearings and yes they will cause it if urs sitting still or air in the lines.....

Re: brakes are pissing me the fuck off
 

QFT. :1


The way you bleed can make the difference. The tried and true 2-man method of pump&piss works, but the 1-man vacuum or auto-bleeder can leave air in the lines.

Next time you turn the car on, pull the line to the booster just to rule that our. One thing I'm thinking it could be is some weird-ass play issues between the BB/MC/pedal. With the engine on, it could be creating a gap. Regardless of why its broke, I'm thinking it probably is the BB. That's the one major part you didn't replace, and the only thing that really changes when you turn the engine on (big vacuum drawn inside it).

BTW make sure none of your lines/fittings/etc are leaking.

Re: brakes are pissing me the fuck off
 

check the slide pins on the calipers too, if one is binding it will cause a condition that feels like a bad m/c

Re: brakes are pissing me the fuck off
 

bullshit, stilll pissing me off...

just replaced the really, really bad wheel bearing and it still has the issue.

Re: brakes are pissing me the fuck off
 

sell it and buy another with good brakes. LOL

Re: brakes are pissing me the fuck off
 

Have you checked the calipers? A bent slide pin?

Re: brakes are pissing me the fuck off
 

im trying to fix it so i can sell it, i need another jetski >:D.

next thing im going to do is replace the front calipers, 22 bucks with core from advance auto.

Re: brakes are pissing me the fuck off
 

how do the lines look? Specifically the rubber lines... no fluid loss right? They could be starting to get rotted and get spongy