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Old 10-19-2006, 02:40 PM   #1
DiscoGsus
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Member#: 47646
Join Date: Nov 2003
Chapter/Region: MAIC
Location: NoVa
Vehicle:
0211 RallyWagon
DGM Sedan

Default Soft brake pedal

I have a soft brake pedal.

I currently have slotted rotors, new (but bedded in) HPS pads, and superblue fluid. My brakes don't have "bite" at all.

The first half of the brake pedal travel only provides 15-20% of braking force.
If I really stomp on it, I can stop very well, but its very hard to modulate at high braking levels.

I want bite. What solves my problem?
Bleed the system again? Master Brake Cylinder support? New pads?

I don't really want Stainless lines, because thats not my problem right now. I am talking my brake response at the beginning of a stop, which is not dependant upon stainless lines.
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Old 10-19-2006, 02:59 PM   #2
Samurai Jack
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2002 Enemy of Aku

Default

Sounds like you have air in the system. Wheter or not you need to bleed the MC and/or the ABS units depends on how low you let the fluid get when you bled the system the 1st time.

Is the fluid level low?
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Old 10-19-2006, 03:14 PM   #3
DiscoGsus
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DGM Sedan

Default

Fluid level is and was fine during the bleeding process.

One thing we did do when bleeding it was leave the bleeder valves open while pumping the pedal to pump all the existing brake fluid out. The reservoir was periodically refilled and never emptied so no air was introduced at the "top" end of the system. Could that have introduced air into the ABS on the caliper end that wasn't immediately flushed out with the next press of the pedal?
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Old 10-19-2006, 03:20 PM   #4
Legacy777
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1990 Legacy & 97 OBS
AWD 6MT EJ22T AWIC Swap

Default

As long as you didn't let the MC run dry, you shouldn't have introduced air into the system.

Try this.

Slowly but firmly pump the brake pedal about 20 times. On the last pump, hold the pedal, and open the bleeder screw. When the pedal goes to the floor, have the person in the car yell that it's on the floor. Close the bleeder screw. Make sure they do not lift the pedal up until you have closed the bleeder screw.

Repeat this process about 3-4 times per wheel, and bleed the brakes in the factory bleeding sequence.

You can also do this with the car running which dramatically increases the pressure in the brake system, and helps force all the air to the caliper. We had to do this with friend's RS. It was the only way to get all the air out.

Josh
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