Forums/Z31P/z31-performance-upgrade-forums driveline-aa/Clutch Pedal Spring

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visco1: (2014-04-26 17:08:29)

does the spring assist the pedal to depress or to return the pedal to the up position? My pedal randomly drops a couple inches, but easily returns up by pulling on it. Always shifts fine, and not losing fluid anywhere. I was about to replace the Clutch master cylinder and when I disconnect the pedal from the cylinder it drops to that lower position. So does that mean the CMC provides the return pressure? I'm lost so any help is appreciated

sir420: (2014-04-26 19:57:24)

The pressure plate returns the pedal to its original position. If your pedal drops like you described the master or slave is letting fluid bleed by.

i r teh noobz: (2014-04-27 16:01:43)

Hydraulic pressure returns the pedal to its resting position. If you aren't losing fluid or having shifting trouble, the master cylinder is likely bypassing internally.

visco1: (2014-04-27 18:13:05)

Thanks , I was assuming that was the case with a worn piston or seal since no leaks. It appears the spring does assist the pedal to the final up position but only after the MC /Hydraulics pushes it up past a certain point where the spring can engage it. That's my take on it

PulseCode: (2014-06-19 14:11:32)

I'm having the same problem with my clutch and would love to know what the RELIABLE options are for a good master cylinder. Thanks.

visco1: (2014-06-20 00:52:40)

I had the same issue a few months ago. No leaks/loss of fluid. I believe it maybe a seal in the MC leaking internal. Before I replaced the MC I adjusted the stroke on the MC with the push rod and it hasnt happened since. There is a limit to this adjustment. I increased the length of the rod by only a couple turns. My thought is the spring is getting weak and/or the hydraulic return maybe slower also. That said, cylinder is cheap but may not solve the problem.