weird brake issue..

[sr20dorifto]

Now, before I get into what's going on.. I searched!!! I searched here and Z ilvia. I have absolutely NO brake pedal pressure!! The pedal goes straight to the floor. The brakes don't start working until the pedal touches the floor. I bled the brakes 4 times with no change at all in braking capability. Oh, and the master cylinder was replaced after the 1st bleed attempt as I noticed it was being covered by brake fluid.

Now, this is what makes the issue new to me. When the motor is idling... S13 Blacktop SR20DET in an S13 Hatch by the way... and I punp the pedal repeatedly, the idle raises a few hundred RPM. I'm looking for ideas, and as it's dark out now, then try them all tomorrow. I'm heading to Brake Masters tomorrow to get a power bleed on the brake system.

Thanks in advance for any input and ideas!!!!

[AmoebAssassin]

Is the master cylinder moving fluid at all? Does the level in the reservoir keep dropping? Have you looked at your calipers and noticed any leakage?

[sr20dorifto]

Fluid does get moved. With the bleeder screws open, fluid comes flying out, and the reservoir level drops when I'm doing this. No noticed leakage. I did notice one thing that seemed out of place. On the front calipers, the bleeder screws are at the bottom of the caliper. This is the first time I've ever seen that. Usually, aren't the bleeders supposed to be at the top of the caliper? Air is less dense and, thus, could be trapped at the top of the caliper, no? The rear bleeders are at the top of the caliper, as well.

Would it be safe to switch the calipers side to side so the bleeders are at the top, then re-bleed?

[AmoebAssassin]

Yes, having the bleeders point down could totally cause this problem! Check this guy out, he had the same issue as you and fixed it by reversing the sides the calipers were on, so the bleeders would point up:

zerothread/235655