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Registered
Join Date: Aug 2000
Location: Deep in the bowels of UCLA hospital
Posts: 2,316
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spongy brake pedal
Well I am going to check the master cyl for leaks tomorrow...but before and after a brake job the pedal was spongy
At a stoplight I can push the pedal all the way down. But if I pump it a couple of times, then the pedal firms up air in my system??? Do I have to do a flush...or is there a quicker way. Also my brake fluid cyl reservoir is filled 1/2 way...that is what my wrech suggested... thanks MJ |
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07-22-2001, 11:06 PM
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Senior Member
Join Date: Apr 2001
Location: Finland
Posts: 1,214
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In my car when I press the pedal it brakes just fine, but if I have to break hard, it starts to grip, then goes down pretty much and after that it starts to brake again..It does not leak anywhere, wonder if I have air in there?
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07-22-2001, 11:11 PM
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Join Date: Apr 2001
Location: HongKong
Posts: 60
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Based on your description of your's dilemma, I would say there air trapped in the brake lines.
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07-23-2001, 03:33 AM
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Join Date: Apr 2001
Location: HongKong
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Based on your description of your's dilemma, I would say there's air trapped in the brake lines.
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07-23-2001, 03:34 AM
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Join Date: Dec 1999
Location: Bellevue WA, USA
Posts: 40
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If you did brake work prior to this it could be that the pistons on the calipers are not the proper distance from the pads. If they are not set to the back of the pad it would take a couple pumps to get then to the point where they actually move the pads to contact the rotor. When you let off the brake there is enough suction to pull the pistons away from the pads again. There are a few things you can do.
You can take the wheel off, pull the pads out and put something ( I use a small block of wood) that is a little thinner than the pads and press the brake pedal. You need the block so the pistons don't come out of the calipers. Also try different size blocks until you can barely insert the pads. If you go to narrow and can't get the pads in you will need to force the pistons back into the caliper a little. ( I have used a c-clamp). Then check the fluid and move on to the next wheel. This procedure solved my problem when I did my brake rebuild last year. The other way I was told to fix it was to just drive carefully and they would slowly adjust themselves. I wasn't comfortable with the spongy brakes so I opted for the first solution. Good luck. Of course this is provided that you think you have removed all the air from the system as the others have stated. ------------------ Gunter '82 SC Targa [This message has been edited by retnug (edited 07-23-2001).] |
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07-23-2001, 06:06 AM
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Location: Deep in the bowels of UCLA hospital
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best way to remove air????
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07-23-2001, 08:28 AM
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Join Date: Aug 2000
Location: Deep in the bowels of UCLA hospital
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anyone have an good suggestions
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07-23-2001, 03:21 PM
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Try this tech article -
http://www.pelicanparts.com/techarticles/mult_bleed_brakes/mult_bleed_brakes.htm |
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07-23-2001, 03:30 PM
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Join Date: Aug 2000
Location: Deep in the bowels of UCLA hospital
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thanks...I thought that was for flushing the system...but I guess that is the only way to get rid of air as well...
MJ |
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07-23-2001, 05:01 PM
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