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Clutch help?!

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Dear All,

I'm still having problems with my clutch. Earlier this year I fitted a new clutch (thanks Pelican Parts for all the good parts & advice!).

When I bled the clutch the pedal stayed stuck to the floor. I tried pumping the clutch pedal with the pressure bleeder attached & managed to get the clutch pedal working partially ( I had to get my foot under it & pulling it back up after a gear change whilst driving).

Tried today to bleed the clutch again, this time I managed to get a bit of dirty fluid (debris flakes in the fluid) out very slowly (had 20psi on the motive bleeder). Then nothing came out. I tried various combinations of clutch pedal up, down & pumping (as it worked last time) to no avail. The clutch pedal remains stuck to the floor & no clutch operation?!

I am wondering if:

1. master cylinder has failed (no sign of leaks though)

2. save cylinder has failed (not sure why it would cause these symptoms)

3. clutch line is blocked with debris (what is the debris from ? corrosion?)


Thanks in advance..

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OK update for anyone with clutch issues...

Tried to bleed again today & no joy. My wife came along & asked to help. I got her pumping the clutch so I could check the activity at the slave cylinder bleed. She was a bit rough with the pedal & slammed it to the stop, which forced out a blockage (maybe?) & we started to get a flow intermittently. I experimented with the pedal down (as recommended) & up. When the pedal was sitting up this time, fluid began to flow fast out the bleed nipple ?! Thinking of the flow diagram, it shouldn't happen. Pressing the pedal in, which should port fluid to the slave & bleed, stopped the flow. I pulled the pedal up again & it flowed freely, clearing out a few big bubbles.

Finished the bleed & car drove fine (although clutch initially wouldn't return the last few centemetres until a few minutes into the drive).

Problem appears to be solved but the clutch bleed with pedal up has totally confused me. Could the master cylinder be on the way out & leaking through an internal seal in the chamber?

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  • 4 weeks later...

Well, out of interest & just in case someone else suffers the same fate (or has this been covered to death?).

I pulled the clutch master cylinder & found an internal seal all chewed up. I guess it was allowing fluid past hence the reluctance of the pedal to return to the up position. Found a good link (posted below) explaining the internal workings of the master, different design but from inspection, it appears to work the same as a boxster master.


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