vrrroommm

Was hoping anyone could shed some light on an annoying issue I've had for about a year. Asked around, but could never get a definite solution.

What I've got: Evo 9 clutch master cylinder. Exedy HyperSingle clutch.

Problem: After the car is shut off for a few hours (even after 2 hours or so), the clutch pedal is pretty much on the floor. After lifting the pedal using my foot, it works fine, and clutch travel, clutch engagement point is fine. No slip, engages just fine.

Any idea of what could be causing it? The system's been bled, and no leaks that I can see. Clutch fluid reservoir never has to be topped up.

Any help / ideas would be much appreciated...

evofan_08

iTrader: (16)

Is your clutch pedal very very stiff after adding the clutch master cyl from the evo 9?

Gyroscope

i had this happen on my procharged integra gsr. after letting it sit, the pedal would go to the floor, id lift it up with my toe every morning, start the car and it worked flawlessly. bled it multiple times and never figured out what was wrong with it.

vegittoss15

iTrader: (2)

Sounds like a slow leak. What happens if you keep your foot down on the clutch for a few minutes?

vrrroommm

Nothing. It just sits there on the floor. It'll go back up a bit, but that's it.
A friend of mine actually suggested that it might be a "slight" leak as well on the master cylinder, between the shaft and the o-ring or whatever seal is there.

I won't even wait 2 seconds, if someone can actually confirm that it's the master cylinder problem.

Lifting it with my toe every morning or after parking, is a bit annoying.

vegittoss15

iTrader: (2)

That is a slow leak then. Check your lines. Try to find where the fluid is dripping.