Home
Don't have an account? Create one now! It's always free!


Forgot Password
Ed's Auto Parts - Mention MOTORGEN for a Discount!
Motorgen Sponsor: McLeod Racing
Motorgen Sponsor: American Muscle - Add style and performance to your Stang
Motorgen Sponsor: Hall Fabrication & Racing
Motorgen Sponsor: Injectors Plus - Performance Fuel Delivery Systems
Reply
 
Thread Tools
Old 03-13-2016, 02:58 PM   #1
enkeivetteenkeivette is offline
Super Moderator
 
enkeivette's Avatar
 
Join Date: Dec 2007
Posts: 6,850
Default Brake Booster Check
Brakes have always been stiff in my C3, but they feel really stiff right now... Like manual brake stiff. Not sure if they've always been like that.

No visible vacuum leaks. But then again, my motor makes about as much vacuum as a diesel. Haha.

So I did the pump up the brake pedal test, and turned the motor on while pressing on it. It moves down incrementally. Like, 1/2 an inch.

So... is it working? Working poorly?




Sent from my iPhone using Tapatalk
__________________
I <3 forced induction.
  Reply With Quote
Old 03-13-2016, 06:45 PM   #2
Shaolin CraneShaolin Crane is offline
pain's fun, hit me again
 
Shaolin Crane's Avatar
 
Join Date: Sep 2009
Posts: 6,264
Default
You would have to get a vacuum gauge and test the entire system.
__________________
Quote:
Originally Posted by Bruce Lee
Forget about winning and losing; forget about pride and pain. Let your opponent graze your skin and you smash into his flesh; let him smash into your flesh and you fracture his bones; let him fracture your bones and you take his life. Do not be concerned with escaping safely — lay your life before him

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Stopping the world!
  Reply With Quote
Old 03-13-2016, 10:12 PM   #3
enkeivetteenkeivette is offline
Super Moderator
 
enkeivette's Avatar
 
Join Date: Dec 2007
Posts: 6,850
Default
Just basically see if it holds vacuum? No other way it could fail?


Sent from my iPhone using Tapatalk
__________________
I <3 forced induction.
  Reply With Quote
Old 03-14-2016, 01:06 AM   #4
Shaolin CraneShaolin Crane is offline
pain's fun, hit me again
 
Shaolin Crane's Avatar
 
Join Date: Sep 2009
Posts: 6,264
Default
Quote:
Originally Posted by enkeivette View Post
Just basically see if it holds vacuum? No other way it could fail?


Sent from my iPhone using Tapatalk
See if it holds vacuum and see what the booster uses. If your car makes as little vacuum s you say, might be time for a vacuum pump.

I know on my car it will hold vacuum for weeks.
__________________
Quote:
Originally Posted by Bruce Lee
Forget about winning and losing; forget about pride and pain. Let your opponent graze your skin and you smash into his flesh; let him smash into your flesh and you fracture his bones; let him fracture your bones and you take his life. Do not be concerned with escaping safely — lay your life before him

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Stopping the world!
  Reply With Quote
Old 03-14-2016, 07:48 AM   #5
enkeivetteenkeivette is offline
Super Moderator
 
enkeivette's Avatar
 
Join Date: Dec 2007
Posts: 6,850
Default
Do you plug one side and pull vacuum on the other? Does it matter which side?


Sent from my iPhone using Tapatalk
__________________
I <3 forced induction.
  Reply With Quote
Old 03-14-2016, 09:59 AM   #6
Shaolin CraneShaolin Crane is offline
pain's fun, hit me again
 
Shaolin Crane's Avatar
 
Join Date: Sep 2009
Posts: 6,264
Default
Quote:
Originally Posted by enkeivette View Post
Do you plug one side and pull vacuum on the other? Does it matter which side?


Sent from my iPhone using Tapatalk
Nope, just pull a line off the vaccum tree, and pump away, actual specifics will be up to the tester you have.
__________________
Quote:
Originally Posted by Bruce Lee
Forget about winning and losing; forget about pride and pain. Let your opponent graze your skin and you smash into his flesh; let him smash into your flesh and you fracture his bones; let him fracture your bones and you take his life. Do not be concerned with escaping safely — lay your life before him

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Stopping the world!
  Reply With Quote
Old 03-14-2016, 03:59 PM   #7
DamianDamian is offline
Senior Member
 
Damian's Avatar
 
Join Date: Jun 2009
Posts: 2,509
Default
The check valve might be plugged up?
__________________
93 GMC Typhoon: new money pit/PITA. Now GT3788R powered.

Boost, because sometimes atmospheric pressure just isn't enough.

"If it has tit's or tires, you can be pretty sure your going to have problems with them..."
  Reply With Quote
Old 03-15-2016, 04:00 PM   #8
enkeivetteenkeivette is offline
Super Moderator
 
enkeivette's Avatar
 
Join Date: Dec 2007
Posts: 6,850
Default
No check valve that I'm aware of, unless it's in the booster itself?


Sent from my iPhone using Tapatalk
__________________
I <3 forced induction.
  Reply With Quote
Old 03-17-2016, 10:44 AM   #9
enkeivetteenkeivette is offline
Super Moderator
 
enkeivette's Avatar
 
Join Date: Dec 2007
Posts: 6,850
Default
It is in the booster. I'll check that.


Sent from my iPhone using Tapatalk
__________________
I <3 forced induction.
  Reply With Quote
Reply

« Previous Thread | Next Thread »


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
vB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -7. The time now is 02:33 AM.

Contact Us - Home - Archive - Top