Brake problems
Thread Starter
6th Gear
Joined: Jun 2001
Posts: 6
Likes: 0
From: Keller TX
Brake problems
I've replaced the bad calipers. While I was at it, I decided to replace the hoses, lines, and proportioning valve. I've bleed the system twice and have a hard pedal with the engine off.
Once I start the engine, the pedal goes to the floor. I didn't replace the master cylinder nor the power booster as those seemed fine prior to starting this VERY fun project.
Anybody have an idea what the problem might be?
Once I start the engine, the pedal goes to the floor. I didn't replace the master cylinder nor the power booster as those seemed fine prior to starting this VERY fun project.
Anybody have an idea what the problem might be?
Melting Slicks
Joined: May 1999
Posts: 2,897
Likes: 0
From: Moon Township PA
Re: Brake problems (brewvette)
I would suggest you start at the beginning, by draining your master cylinder with a donated turkey baster. Just don't tell your wife. ;) Then refill with fresh fluid. From there, follow the brake bleeding sequence in your service manual and bleed all brakes. Remember to refill the reservoir after each caliper is done. You probably have a little air in the system. By starting at the MC you can then ensure that each bleeder screw is tight and you aren't sucking air past one. In addition, when you repalced the calipers, were they pre-assembled or did you have to do anything. You may have a bad seal in one or perhaps just a loose bleeder.
Gary
Gary
Drifting
Joined: Feb 2001
Posts: 1,603
Likes: 0
From: San Francisco, CA
Re: Brake problems (brewvette)
The pedal will soften up and drop down a bit once the booster kicks in. Absent that, did you bleed the master cylinder. If it went dry you must and even if it didn't their may still be air. Start their as suggested by former post and then move to wheels. Don't give up, you will get it.
Melting Slicks
Joined: Oct 2000
Posts: 3,023
Likes: 2
From: TEXASTEXASTEXASTEXAS TEXASTEXASTEXASTEXAS
St. Jude Contributor
Re: Brake problems (R. Bruno)
Also make sure you bleed them in the order outlined in your service manual. Not a bad idea to tap the calipers lightly with a wrench or hammer to dislodge any air bubbles.
JB
'78SA
JB
'78SA
