C4 General Discussion General C4 Corvette Discussion not covered in Tech

Brake Issues

Thread Tools
 
Search this Thread
 
Old Dec 15, 2008 | 01:34 PM
  #1  
BEATDOWN85's Avatar
BEATDOWN85
Thread Starter
Advanced
 
Joined: Jul 2008
Posts: 50
Likes: 0
Default Brake Issues

Does anyone know how to test your master cylinder to see if it is ok?
Reply
Old Dec 15, 2008 | 05:57 PM
  #2  
rich653's Avatar
rich653
Burning Brakes
 
Joined: Aug 2006
Posts: 780
Likes: 0
From: New Port Richey Florida
Default

Usually when the master cyl goes out the brake pedal will slowly creep to the floor under pressure, If you've had to add brake fluid I would check master and all wheel cylinders for leakage, brake hoses, lines etc. If everything looks dry and you haven't opened the system anywhere that would let air in and the pedal goes to the floor under pressure then I would be pretty sure the master cylinder is leaking internally and needs to be replaced.
Reply
Old Dec 15, 2008 | 07:46 PM
  #3  
rsovine's Avatar
rsovine
Intermediate
 
Joined: Oct 2008
Posts: 45
Likes: 0
Default

I have a question about my brakes on my 84. When I push the pedal after the car warms up, the pedal is really hard to push and only goes down a couple of inches while not stopping the car too good.

What do you think this problem is? The pads have plenty of pad left on them.
Reply
Old Dec 15, 2008 | 07:54 PM
  #4  
aminnich's Avatar
aminnich
Le Mans Master
 
Joined: Jan 2006
Posts: 6,564
Likes: 6
From: Woodstock Georgia
Default

Originally Posted by rsovine
I have a question about my brakes on my 84. When I push the pedal after the car warms up, the pedal is really hard to push and only goes down a couple of inches while not stopping the car too good.

What do you think this problem is? The pads have plenty of pad left on them.
Either a bad booster or a lack of vacuum. Can you hear any hissing from the booster with a light brake application?
Reply
Old Dec 16, 2008 | 08:37 PM
  #5  
rsovine's Avatar
rsovine
Intermediate
 
Joined: Oct 2008
Posts: 45
Likes: 0
Default

I can not hear any hissing. The pedal is fine until the car warms up, misleading me in any routine repair.

I may change the booster and see if that works.
Reply
Old Dec 17, 2008 | 12:23 AM
  #6  
aminnich's Avatar
aminnich
Le Mans Master
 
Joined: Jan 2006
Posts: 6,564
Likes: 6
From: Woodstock Georgia
Default

Before you swap the booster just pull the vac line off (engine cold and then again warmed up) and see what kind of vacuum you have.
Reply

Get notified of new replies

To Brake Issues





All times are GMT -4. The time now is 11:26 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