blackccoupe

k guys got this probelm with my brakes, sometimes the pedal is fine and sometimes it almost goes to the floor any suggestions

Dilly

try bleeding them and go on from there.

tatmark1

master cylinder or brake line

EJ8mike

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dillywong &raquo;</TD></TR><TR><TD CLASS="quote">try bleeding them and go on from there.</TD></TR></TABLE>

blackccoupe

bled them today still does it

tatmark1

i told ya what it was. i just went through the same thing with my wifes civy

blackccoupe

brake lines are fine no leaks and jusr recently replaced the master cylinder

blackccoupe

may be the lines though

drewbie

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blackccoupe &raquo;</TD></TR><TR><TD CLASS="quote">may be the lines though</TD></TR></TABLE>

you have either a weak master cylinder or warped rotors.

tatmark1

how do you know the lines r fine?can you see inside the rubber line?i still say master cylinder. but bleed the **** out of it some more. if it doesnt work you have a bad master or line ( i think master)
a warped rotor wont make the pedal go to the floor

blackccoupe

guess it could be a brake line but how would it only do it sometimes y aknow

RocknRon

It's your M/C.

blackccoupe

yeah i think its the master too do u have to bench bleed a new one or can i just bleed all 4 of my brakes found a new 91 ex master for 80 shipped like th one i'm using in my 94 is that a good price?

drewbie

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blackccoupe &raquo;</TD></TR><TR><TD CLASS="quote">yeah i think its the master too do u have to bench bleed a new one or can i just bleed all 4 of my brakes found a new 91 ex master for 80 shipped like th one i'm using in my 94 is that a good price?</TD></TR></TABLE>

80 shipped for a MC/BB is a good deal, for a GSR. Not a EF one.

One way you can try out the lines is to do several Hard braking stops and then see how squishy your lines are.

I think I heard someone say before it was a good idea to replace them every 10 years or so.

If it's your MC, you can prolly just replace a leaky seal.

-Gary-

I had the same issue; it was the master cylinder.

tatmark1

i went to junkyard and pulled a brand new one for $10

blackccoupe

just changed the master same problem guessing brake lines hahah all the calipers are new

tatmark1

take c clamp and try pushin caliper pistons in if one is real hard thats probly the one(make sure cap is off). im really surpised master didnt fix it (i had master and one b/l bad)

blackccoupe

theres no way that the brake booster is bad is there, if not i just buying some stainless lines haha

JasonGhostz

Hi bc. Have you had the time to Bench Bleed your BMC? From what I understand, this must be done every time the BMC is removed/replaced, even Brand New ones. Most of the threads that deal with hydraulic problems die after the OP Bench Bleeds their BMC...

Others who have done this may be able to help you more. I'm just throwing this back out there, because you only mentioned you were planning on it...

Let us know!
JasonGhostz

blackccoupe

yep bench bled it with the 2 hoses til no air same symptoms as before maybe it just needs a really good bleed i did the normal way how should i like flush the lines so no air is in there?

blackccoupe

k beld the brakes alot till o air still same symptoms so lines or booster are bad what u guys think

Targa250R

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drewbie &raquo;</TD></TR><TR><TD CLASS="quote">80 shipped for a MC/BB is a good deal, for a GSR. Not a EF one.</TD></TR></TABLE>
Err, obviously you haven't read up much about the '90-91 EX master cylinder. It's a 15/16" piece that directly bolts up to any '92-95 Civic non-ABS booster and brake lines with no modifications or line reflaring.

blackccoupe

any other suggestions guys

lv6l

fill up brake resevoir. check daily to see if the amount is the same all the time or slowly starts going down. if its going down, you have a leak. if not and you have bleed it properly then its your master cylinder, go change it. if you change your master cylinder and it still does it, your not bleeding right. problem solved.