REVscene - Vancouver Automotive Forum


Welcome to the REVscene Automotive Forum forums.

Registration is Free!You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today! The banners on the left side and below do not show for registered users!

If you have any problems with the registration process or your account login, please contact contact us.


Go Back   REVscene Automotive Forum > Technical Discussion > Suspension, Brakes , Wheels & Tires Tech

Suspension, Brakes , Wheels & Tires Tech THIS SPACE OPEN FOR ADVERTISEMENT. YOU SHOULD BE ADVERTISING HERE!
Suspension components, brakes, Wheels and Tires. All things related to how your car handles...

Reply
 
Thread Tools
Old 05-07-2009, 03:16 PM   #1
NOOB, Not Quite a Regular!
 
Join Date: Jun 2006
Location: Maple Ridge BC
Posts: 30
Thanked 0 Times in 0 Posts
90 integra BRAKE problems

I am going to start off by saying that I have read posts on this site and others and have not found a definite answer.

MY PROBLEM:

Here is my issues with the acura racecar - ABS removed and non-ABS front lines and Prop valve installed along with type R front calipers and stainless lines all around

hard pedal when pumping with the car turned off but as soon as the car is on - the pedal is super squishy like the master is bypassing or air in the lines?

PARTS INSTALLED :

New pads
2 new master cylinders have been try and bench bled before install
new stainless lines
new front calipers

The only other thing that checks out with tests that has not been changed is the booster ? My though on a bad booster is that if its bad the pedal would be hard not soft.

a buddy and I also bled about 2-3 bottles worth of fluid through the thing with no results. we thought it was air in the line somewhere that just wont come out.

Please only post if you have had this same issue and know what was done to fix it.

THANX
Chris Doodson
Advertisement
Doodson is offline   Reply With Quote
Old 05-07-2009, 03:36 PM   #2
Banned By Establishment
 
Iceman-19's Avatar
 
Join Date: Jan 2003
Location: Coquitlam, BC
Posts: 9,521
Thanked 1,289 Times in 409 Posts
I have to ask, how did you do the brake bleeding? Also, if you pump the brakes and hold with the car off, does the pedel stay where it is or slowly lower?
Iceman-19 is offline   Reply With Quote
Old 05-07-2009, 05:27 PM   #3
NOOB, Not Quite a Regular!
 
Join Date: Jun 2006
Location: Maple Ridge BC
Posts: 30
Thanked 0 Times in 0 Posts
Brakes

bench bled the master, and have bled the brakes both by gravity and PUMP-PUMP-PUMP- crack-close method.
RR-LF-LR-RF
and the pedal does stay and does not sink over time. We also did the booster tests as per HONDA/ACURA service manual and the booster checked out fine.
I am thinking there are 3 posible causes.

Another bad master - not likley but possible
Air in the system - bubble sitting somewhere like Prop-valve
Fitting is leaking air into the system but no fluid coming out?
Doodson is offline   Reply With Quote
Old 05-08-2009, 12:16 AM   #4
RS.net, where our google ads make absolutely no sense!
 
Join Date: Nov 2001
Location: Tokyo/Vancouver
Posts: 967
Thanked 102 Times in 50 Posts
if bench bleeding doesn't work, i'd look at the booster
ncrx is offline   Reply With Quote
Old 05-08-2009, 06:33 PM   #5
NOOB, Not Quite a Regular!
 
Join Date: Jun 2006
Location: Maple Ridge BC
Posts: 30
Thanked 0 Times in 0 Posts
have you ever heard of a booster making the brakes soft? I thought when it goes bad the pedal gets hard?
Doodson is offline   Reply With Quote
Old 05-08-2009, 10:16 PM   #6
RS controls my life!
 
Puck Luck's Avatar
 
Join Date: Apr 2004
Location: lower mainland
Posts: 750
Thanked 93 Times in 78 Posts
Quote:
Originally Posted by Doodson View Post
have you ever heard of a booster making the brakes soft? I thought when it goes bad the pedal gets hard?
Depends on what goes wrong with the booster. If it's a leak, then yes, the pedal goes hard, and you'll have a hell of a time stopping cause you have no boost. And the engine will likely idle bad because of the vacuum leak.

But it does remind me a case i had back in the mid 90's. Customer drove his 91 prelude into a ditch and car was partially submerged in water. I replaced the trans and repaired some other electrical issues. But the brake pedal was very soft. I replaced the master cylinder (bench bled it) bled at the wheels but still had a soft mushy pedal. I ended up removing the booster. When i had it out and tipped it over, about half liter of water spilled out. Replaced the booster and it was good.
I think the customer still has that car, i'm sure i seen him at our dealership with the car around a month ago.
I also remember him saying to the service adviser, when he drove into the ditch, that caused him to spilled his rum and coke
__________________
Don't open your hood to strangers........ N 'ouvrez pas votre capot des inconnus
Puck Luck is offline   Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -8. The time now is 12:57 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
SEO by vBSEO ©2011, Crawlability, Inc.
Revscene.net cannot be held accountable for the actions of its members nor does the opinions of the members represent that of Revscene.net