Brake Problem......(air?)
Thread Starter
Registered User
Joined: Feb 2003
Posts: 82
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From: Bay Area, CA
Brake Problem......(air?)
I changed the brake fluid on my 94 Integra twice in two weeks and have notice the same problem. Whenever I start the car, drive a few minutes, and step on the brakes, it goes all the way to the ground. But the brakes will be fine like 10 minutes later. The first time I did this, I thought I may had gotten air in they lines so I bleed it again(*till I saw no air bubbles in the line*), and still the same problem.
I follow the sequence to bleed the brakes: RR, LF, LR, and RF. Attached a hose with line, had my friend pumped the brakes till it was hard before I opened the bleeder valve to let the brake fluid out. Closed the bleeder valve while my friend had the brake pedal pressed and repeated the process. I never let the brake fluid go below the MIN line and made sure the lines were free of air bubbles before going to the next.
So what is the problem??????????????
I follow the sequence to bleed the brakes: RR, LF, LR, and RF. Attached a hose with line, had my friend pumped the brakes till it was hard before I opened the bleeder valve to let the brake fluid out. Closed the bleeder valve while my friend had the brake pedal pressed and repeated the process. I never let the brake fluid go below the MIN line and made sure the lines were free of air bubbles before going to the next.
So what is the problem??????????????
CHRISTMASTIME IN IRAQ
Joined: Apr 2003
Posts: 12,413
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From: Bay Area
Check your brake pushrod (The thing that goes from the pedal through the firewall)... if there's fluid on that, then I'd have to say that with your symptoms and fluid on the pushrod, then a faulty master cylinder could be your problem...
Thread Starter
Registered User
Joined: Feb 2003
Posts: 82
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From: Bay Area, CA
The only thing I can think off is also the master cylinder. But my brakes were working fine before I went to bleed the fluid. I am more then positive I squirted out all the air bubbles on each caliper......
slow lane cruiser
Joined: Sep 2003
Posts: 110
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From: NC
my 95 did the same thing a few months ago.
Ibled the brakes over and over but it would eventually start to fall to the floor again after afew miles. the master cylinder would have to fail very badly to get fluid on the pushrod,so bleeding wouldnt make them work even for allittle while.
If you chang the master cylinder your self when youre putting the new one in thread the lines first before you put the cylinder on the screw posts it makes the job easier as you wont have to pull on the lines so much.
Ibled the brakes over and over but it would eventually start to fall to the floor again after afew miles. the master cylinder would have to fail very badly to get fluid on the pushrod,so bleeding wouldnt make them work even for allittle while.
If you chang the master cylinder your self when youre putting the new one in thread the lines first before you put the cylinder on the screw posts it makes the job easier as you wont have to pull on the lines so much.
what did you dream?...
Joined: Oct 2003
Posts: 48
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From: Philly
'Sounds like you did everything right. Except listen to yourself! When you said "But the brakes will be fine like 10 minutes later. "
You're done. Move on. Unless this scenario plays out every time you go to drive the car after it's been sitting. Does it?
After you first drive the car after you've opened up the hydraulic system, you will still have to pump up the system, not just "step on the brakes" with one pedal push.
g/l
-W-
You're done. Move on. Unless this scenario plays out every time you go to drive the car after it's been sitting. Does it?
After you first drive the car after you've opened up the hydraulic system, you will still have to pump up the system, not just "step on the brakes" with one pedal push.
g/l
-W-