YotaTech Forums

Newbie Tech Section Often asked technical questions can be asked here

Brake problem

Thread Tools
 
Search this Thread
 
Old 07-30-2018, 07:25 PM
  #1  
Registered User
Thread Starter
 
85basemodel's Avatar
 
Join Date: Jul 2018
Posts: 27
Likes: 0
Received 0 Likes on 0 Posts
Brake problem
hello guys i have 1992 toyota pickup i recently bought it and i changed the master cylinder due to soft brake pedal i bled the entire system and its still the same some times their there and some times not there pretty soft i even bled the lspv any tips? Keep bleeding the system new booter?
85basemodel is offline  
Reply Like
Old 07-31-2018, 11:29 AM
  #2  
Registered User
iTrader: (1)
 
thefishguy77's Avatar
 
Join Date: Dec 2011
Location: sammamish, wa.
Posts: 2,179
Likes: 0
Received 62 Likes on 57 Posts
How did you determine the MC was bad? I suspect you still have air in the system. How much fluid did you go through bleeding the system.
thefishguy77 is offline  
Reply Like
Old 07-31-2018, 12:03 PM
  #3  
Registered User
iTrader: (1)
 
wyoming9's Avatar
 
Join Date: Apr 2009
Location: I live in New Tripoli Pa out in the woods
Posts: 13,381
Received 99 Likes on 86 Posts
Red face
Possible Rubber hoses ballooning under pressure

Rear Brakes not adjusted correct Parking Brake in good working condition ??

Sucking Air in one of the Master Cylinder connections
wyoming9 is offline  
Reply Like
Old 07-31-2018, 12:07 PM
  #4  
Registered User
Thread Starter
 
85basemodel's Avatar
 
Join Date: Jul 2018
Posts: 27
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by thefishguy77
How did you determine the MC was bad? I suspect you still have air in the system. How much fluid did you go through bleeding the system.
I changed it so i new that couldn’t of been the problem with a new one
85basemodel is offline  
Reply Like
Old 07-31-2018, 01:33 PM
  #5  
Registered User
iTrader: (1)
 
thefishguy77's Avatar
 
Join Date: Dec 2011
Location: sammamish, wa.
Posts: 2,179
Likes: 0
Received 62 Likes on 57 Posts
Throwing parts at a problem is a poor way of fixing it. Relies on total luck and money.

So I ask again. How much brake fluid did you use to bleed the system. A small bottle, a large bottle, 2 large bottles.
thefishguy77 is offline  
Reply Like
Old 07-31-2018, 03:18 PM
  #6  
Registered User
 
akwheeler's Avatar
 
Join Date: Apr 2016
Location: Alaska
Posts: 1,556
Received 284 Likes on 212 Posts
Originally Posted by 85basemodel
hello guys i have 1992 toyota pickup i recently bought it and i changed the master cylinder due to soft brake pedal i bled the entire system and its still the same some times their there and some times not there pretty soft i even bled the lspv any tips? Keep bleeding the system new booter?
It can't be the booster unless your engine runs like crap when you hit the brakes or you have to hit the brakes REALLY hard to stop. A soft pedal will be what the others have mentioned, air in the system, improper rear shoe adjustment, hose ballooning or a combination of those things.
akwheeler is offline  
Reply Like
Old 07-31-2018, 08:23 PM
  #7  
Registered User
Thread Starter
 
85basemodel's Avatar
 
Join Date: Jul 2018
Posts: 27
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by thefishguy77
Throwing parts at a problem is a poor way of fixing it. Relies on total luck and money.

So I ask again. How much brake fluid did you use to bleed the system. A small bottle, a large bottle, 2 large bottles.
I used about a bottle and 3/4 of a bottle
85basemodel is offline  
Reply Like

Trending Topics

Old 07-31-2018, 11:54 PM
  #8  
Registered User
iTrader: (1)
 
wyoming9's Avatar
 
Join Date: Apr 2009
Location: I live in New Tripoli Pa out in the woods
Posts: 13,381
Received 99 Likes on 86 Posts
Red face
That the 32 OZ bottle or 64OZ bottle ??
wyoming9 is offline  
Reply Like
Old 08-01-2018, 08:00 AM
  #9  
Registered User
iTrader: (1)
 
thefishguy77's Avatar
 
Join Date: Dec 2011
Location: sammamish, wa.
Posts: 2,179
Likes: 0
Received 62 Likes on 57 Posts
The more detail you give us the better we can help. But if you don't help us by answering the questions then how are we supposed to help you?
thefishguy77 is offline  
Reply Like
Old 08-01-2018, 03:49 PM
  #10  
Registered User
Thread Starter
 
85basemodel's Avatar
 
Join Date: Jul 2018
Posts: 27
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by thefishguy77
The more detail you give us the better we can help. But if you don't help us by answering the questions then how are we supposed to help you?
sorry guys im away from my phone most of the say so i cant answer as quick
85basemodel is offline  
Reply Like
Old 08-01-2018, 03:50 PM
  #11  
Registered User
Thread Starter
 
85basemodel's Avatar
 
Join Date: Jul 2018
Posts: 27
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by wyoming9
That the 32 OZ bottle or 64OZ bottle ??
32 ounce
85basemodel is offline  
Reply Like
Old 08-01-2018, 04:26 PM
  #12  
Registered User
iTrader: (1)
 
thefishguy77's Avatar
 
Join Date: Dec 2011
Location: sammamish, wa.
Posts: 2,179
Likes: 0
Received 62 Likes on 57 Posts
You probably still have air in your lines.

Did you bench bleed the MC first?
thefishguy77 is offline  
Reply Like
Old 08-01-2018, 04:47 PM
  #13  
Registered User
Thread Starter
 
85basemodel's Avatar
 
Join Date: Jul 2018
Posts: 27
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by thefishguy77
You probably still have air in your lines.

Did you bench bleed the MC first?
i somewhat did that is probably my problem im going to take the mc off rebench bleed it then blled the whole system
85basemodel is offline  
Reply Like
Old 08-01-2018, 09:24 PM
  #14  
Registered User
Thread Starter
 
85basemodel's Avatar
 
Join Date: Jul 2018
Posts: 27
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by thefishguy77
The more detail you give us the better we can help. But if you don't help us by answering the questions then how are we supposed to help you?
when the veichle is off the brakes seem solid but once i turn it on the go soft
85basemodel is offline  
Reply Like
Old 08-02-2018, 07:02 AM
  #15  
Registered User
 
akwheeler's Avatar
 
Join Date: Apr 2016
Location: Alaska
Posts: 1,556
Received 284 Likes on 212 Posts
Originally Posted by 85basemodel

when the veichle is off the brakes seem solid but once i turn it on the go soft
That is because the brake booster is helping you push the pedal when the engine is running.
try tapping on the side of the master cylinder during the bleeding process, you will likely see air bubbles come up into the reservoir when you do.
If you start the bleeding process this way (getting all of the air out of the master cylinder that you can) it will make the whole process go faster and you will have better results.
akwheeler is offline  
Reply Like
Old 08-02-2018, 11:02 PM
  #16  
Registered User
Thread Starter
 
85basemodel's Avatar
 
Join Date: Jul 2018
Posts: 27
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by akwheeler
That is because the brake booster is helping you push the pedal when the engine is running.
try tapping on the side of the master cylinder during the bleeding process, you will likely see air bubbles come up into the reservoir when you do.
If you start the bleeding process this way (getting all of the air out of the master cylinder that you can) it will make the whole process go faster and you will have better results.
thanks ill try that
85basemodel is offline  
Reply Like
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
1986 Brake Problem: Fading Brake Pedal
gman62
86-95 Trucks & 4Runners
9
03-16-2009 08:43 PM
did front brake pads, now e brake wont go off?
justpassinbye
Maintenance & Repair Archives
11
06-06-2005 09:46 PM
03 Brake question for all you brake experts
The Dutch Man
95.5-2004 Tacomas & 96-2002 4Runners
15
06-26-2004 09:47 AM
E-brake and brake light...
rpeAMP
95.5-2004 Tacomas & 96-2002 4Runners
5
02-20-2003 04:16 PM
Back to Subforum
Newbie Tech Section
View Next Unread
Need help choosing shocks for 95 4runner




Advanced Search
Quick Reply: Brake problem


Reply Closed Thread Share

All times are GMT -8. The time now is 02:18 PM.