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brake pedal is very loose. goes all the way to the ground after stepping on it for a while

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Old Jul 19, 2005 | 04:40 PM
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confewcious's Avatar
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Default brake pedal is very loose. goes all the way to the ground after stepping on it for a while

very scary.

76 told me it was the brake master cylinder.

and 400 to flush and replace it.

anyone got an opinion?

can i do a brake flush first?

cuz i accidently poured power steering fluid in there.
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Old Jul 19, 2005 | 04:57 PM
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Default Re: brake pedal is very loose. goes all the way to the ground after stepping on it for a while (conf

$400 is retarded. You can get a rebuilt OEM Nissin brake master cylinder from AutoZone for about $60 after core exchange. It's pretty easy to change (be sure to bench bleed), but then you have to bleed all 4 wheels.

And yes you need a new master cylinder. I had the same problem last summer.
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Old Jul 19, 2005 | 05:01 PM
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Default Re: brake pedal is very loose. goes all the way to the ground after stepping on it for a while (conf

thats what i thought, especially after they charged me 75 bucks just to tell me that.

I think i'll will let a shop do it.
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Old Jul 19, 2005 | 05:49 PM
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Default Re: brake pedal is very loose. goes all the way to the ground after stepping on it for a while (conf

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PatrickGSR94 &raquo;</TD></TR><TR><TD CLASS="quote">$400 is retarded. You can get a rebuilt OEM Nissin brake master cylinder from AutoZone for about $60 after core exchange. It's pretty easy to change (be sure to bench bleed), but then you have to bleed all 4 wheels.

And yes you need a new master cylinder. I had the same problem last summer.</TD></TR></TABLE>

I did it like 4 days ago. And its $60 BEFORE the core exchange. Its very easy to change if you have any experience working on cars. I believe I did mine in a little over an hour, and I more than likely got distracted and went in the house a few times. And I bench bled mine and actually didn't have to bleed all 4 wheels. My brakes felt fine without bleeding.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by confewcious &raquo;</TD></TR><TR><TD CLASS="quote">thats what i thought, especially after they charged me 75 bucks just to tell me that.

I think i'll will let a shop do it.</TD></TR></TABLE>

Please, for the sake of your wallet, don't let them do it. If you were near NOVA or Central VA then I would do it for $100, and that would still be ripping you off.

Just get your hands dirty and use the $400 on something cool
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Old Jul 19, 2005 | 05:51 PM
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Default Re: brake pedal is very loose. goes all the way to the ground after stepping on it for a while (conf

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by confewcious &raquo;</TD></TR><TR><TD CLASS="quote">very scary.

76 told me it was the brake master cylinder.

and 400 to flush and replace it.

anyone got an opinion?

can i do a brake flush first?

cuz i accidently poured power steering fluid in there. </TD></TR></TABLE>

P/S fluid and brake fluid is the same thing in most cars, you're ok.
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Old Jul 19, 2005 | 06:16 PM
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From: Bajiniashyu No Richomondo Desu
Default Re: brake pedal is very loose. goes all the way to the ground after stepping on it for a while (conf

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by confewcious &raquo;</TD></TR><TR><TD CLASS="quote">very scary.

76 told me it was the brake master cylinder.

and 400 to flush and replace it.

anyone got an opinion?

can i do a brake flush first?

cuz i accidently poured power steering fluid in there. </TD></TR></TABLE>

P/S fluid and brake fluid is the same thing in most cars, you're ok.
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Old Jul 19, 2005 | 06:32 PM
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Default Re: brake pedal is very loose. goes all the way to the ground after stepping on it for a while (conf

whats a bench bleed?
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Old Jul 19, 2005 | 06:32 PM
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never go to 76 for anything except gas... but for some retarded reason i saw a ferrari getting worked on there once ( i think it was a diablo cant remember)
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Old Jul 19, 2005 | 06:43 PM
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Default Re: brake pedal is very loose. goes all the way to the ground after stepping on it for a while (conf

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Monkey-DC &raquo;</TD></TR><TR><TD CLASS="quote">never go to 76 for anything except gas... but for some retarded reason i saw a ferrari getting worked on there once ( i think it was a diablo cant remember)</TD></TR></TABLE>

Actually not all 76 mechanics are bad, a friend of mine just got his ASE cert and worked at a 76 for a while. He was back living at home and was waiting for his new job with the school distrucit to start. So he was there working on cars, and he is a great mechanic!!!

But yes $400 is a rip
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Old Jul 19, 2005 | 06:44 PM
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Default Re: brake pedal is very loose. goes all the way to the ground after stepping on it for a while (conf

try bleeding them it helped on my friends gs-r.
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Old Jul 19, 2005 | 06:45 PM
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Master cylinder probably. Just bench bleed it (directions on this both in the box for the part and in the helms/haynes) and install it and then check the pedal. Depending on your luck you could get away with not bleeding all 4 wheels, on my old accord I had to but on my integra I didn't.
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Old Jul 19, 2005 | 06:56 PM
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Default Re: brake pedal is very loose. goes all the way to the ground after stepping on it for a while (conf

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by confewcious &raquo;</TD></TR><TR><TD CLASS="quote">whats a bench bleed?</TD></TR></TABLE>

When you get the new master cylinder, you must get all the air out of it. You attach the brake fluid reservoir to the top of the master cylinder and put brake fluid in it. The new master cylinder should come with small plugs that go in the holes where the brake lines screw in. Make sure those plugs are firmly in the holes. It says in the instructions to use a dowl rod to push in the metal rod sticking out, but thats not neccessary, you can just use your hand. Anyway, push in the metal rod. Basically what this does is circulate brake fluid through the cylinder. Do this once, then wait 15 seconds, do it again. Each time you do it, you will see bubbles coming out from around the edges of the brake line plugs. When you see no more bubbles, and the metal rod almost becomes impossible to push in anymore, its ready to be installed.
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Old Jul 19, 2005 | 06:59 PM
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hmmmm... that sounds pretty easy. nothing is under pressure right. like if it unbolt it, will it explode like the A/C
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Old Jul 20, 2005 | 05:42 AM
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Actually when you bench bleed the MC, you're supposed to put fluid in the reservoir, and then attach tubes from the ports on the MC and run them back into the fluid in the reservoir.

My MC from AutoZone came with the needed tubes and fittings, etc. It was about $90 before I brought my core back, and I got about $30 back when I brought my old MC back in.
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Old Jul 20, 2005 | 06:37 AM
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Default Re: (confewcious)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by confewcious &raquo;</TD></TR><TR><TD CLASS="quote">hmmmm... that sounds pretty easy. nothing is under pressure right. like if it unbolt it, will it explode like the A/C</TD></TR></TABLE>

No its not under any kind of pressure, however when you do take the old unit off, don't decide that you're going to test it by pushing the metal rod in. I did this, and it shot hot brake fluid out of the brake line holes and got on my chest. It didn't really burn, but its not something you would want to do by choice.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PatrickGSR94 &raquo;</TD></TR><TR><TD CLASS="quote">Actually when you bench bleed the MC, you're supposed to put fluid in the reservoir, and then attach tubes from the ports on the MC and run them back into the fluid in the reservoir.

My MC from AutoZone came with the needed tubes and fittings, etc. It was about $90 before I brought my core back, and I got about $30 back when I brought my old MC back in.</TD></TR></TABLE>

I got those tubes and fittings too but I didn't need to use them for some reason. I'm assuming because of your screenname you drive a '94 GSR, in which case your MC is probably different then the one on my '88 LS.
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Old Jul 20, 2005 | 05:04 PM
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Default Re: (Sh!ttyLS)

eh, I've always read that this is the way to bench-bleed a master cylinder. The idea is to get the air out of the cylinder. By running tubes from the ports back into the reservoir, the fluid pumped out by the cylinder will take the air with it, back into the reservoir, and air will not be able to re-enter through the tubes because they are submerged in the reservoir. You do the same thing when bleeding each brake cylinder at each wheel, put the end of a tube in fluid so that air can't come back in.
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Old Jul 27, 2005 | 10:52 PM
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Default Re: (PatrickGSR94)

it was the master cylinder. cost me 165 to replace it for a remanufactured one and 1 year warrnanty.

plus the 75 bucks i spent at 76 to let them look at it
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