C4 General Discussion General C4 Corvette Discussion not covered in Tech

C4 Brake Bleeding

Thread Tools
 
Search this Thread
 
Old Aug 1, 2015 | 06:22 PM
  #1  
markmac's Avatar
markmac
Thread Starter
4th Gear
 
Joined: Aug 2012
Posts: 4
Likes: 0
Default C4 Brake Bleeding

Rebuilding 90 C4 brakes and having trouble with bleeding the left front.
Not getting any pressure to caliper.

Brake pedal very difficult to depress.
Reply
Old Aug 2, 2015 | 08:26 AM
  #2  
Dalesc4's Avatar
Dalesc4
Racer
 
Joined: Jun 2015
Posts: 333
Likes: 19
From: Melbourne Victoria
Default

I'm no expert on the c4 yet
But I did read a post last week about a simular issue was related to the abs unit
It's behind the drivers seat on my 88 not sure if yours is the same
Maybe look in the Search area and see if u can find any thing
I'm sure someone with more experience can help
Dale


YQUOTE=markmac;1590179784]Rebuilding 90 C4 brakes and having trouble with bleeding the left front.
Not getting any pressure to caliper.

Brake pedal very difficult to depress.[/QUOTE]
Reply
Old Aug 2, 2015 | 09:22 AM
  #3  
C409's Avatar
C409
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2005
Posts: 6,475
Likes: 564
From: Clearwater Florida
Default

......... Crack the fitting for the brake hose at the chassis end and see if you get fluid there ... the rubber liner can swell and prevent brake fluid from passing through the hose ... if the hose is bad , you might consider changing all four ... an upgrade to stainless steel braided hoses would be my recommendation ........
Reply
Old Aug 2, 2015 | 11:24 AM
  #4  
Tom400CFI's Avatar
Tom400CFI
Team Owner
Pro Mechanic
20 Year Member
 
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Default

Originally Posted by C409
......... Crack the fitting for the brake hose at the chassis end and see if you get fluid there ... the rubber liner can swell and prevent brake fluid from passing through the hose ... if the hose is bad , you might consider changing all four ... an upgrade to stainless steel braided hoses would be my recommendation ........
Break it down to see where the issue is.
Reply
Old Aug 3, 2015 | 10:04 AM
  #5  
markmac's Avatar
markmac
Thread Starter
4th Gear
 
Joined: Aug 2012
Posts: 4
Likes: 0
Default

Originally Posted by Tom400CFI
Break it down to see where the issue is.
Have traced back to ABS and nothing found.
No pressure at chassis side of rubber line.

Not sure which line at abs is for this brake.
Reply
Old Aug 3, 2015 | 10:54 AM
  #6  
Tom400CFI's Avatar
Tom400CFI
Team Owner
Pro Mechanic
20 Year Member
 
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Default

I don't know....I'd try to identify the line from the master to the ABS module, crack it at the module and see if you have pressure/flow there.
Reply
Old Aug 4, 2015 | 12:28 AM
  #7  
Cliff Harris's Avatar
Cliff Harris
Race Director
15 Year Member
 
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
Default

Originally Posted by markmac
Have traced back to ABS and nothing found.
No pressure at chassis side of rubber line.
There is no rubber line in the brake system. You are probably looking at the coupling hose for the fuel tank to vapor canister line.
Reply
Old Aug 4, 2015 | 08:29 AM
  #8  
markmac's Avatar
markmac
Thread Starter
4th Gear
 
Joined: Aug 2012
Posts: 4
Likes: 0
Default

Originally Posted by Cliff Harris
There is no rubber line in the brake system. You are probably looking at the coupling hose for the fuel tank to vapor canister line.
Actually, there are four rubber hoses in the brake system, one at each wheel. They run from the caliper to the chassis

But thanks anyway.
Reply

Get notified of new replies

To C4 Brake Bleeding

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-1

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-2

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-3

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-4

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-5

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-6

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-7

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-8

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-9

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski




All times are GMT -4. The time now is 05:33 AM.

story-0
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-1
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-2
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-3
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-4
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-5
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-6
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-7
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-8
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-9
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE