Sticky: (Official) 370Z Clutch Pressure (CSC) Failures

Jsolo

Clutch failures with no visible fluid leaks usually involve failure of the master cylinder. Rather than pressuring the fluid in the MC/hydraulic line, the MC piston is simply moving back and forth with fluid leaking past the seals in the MC bore. You can call this an internal leak. Level in the reservoir would not change.

So technically it's not a CSC failure and a hell of alot cheaper to replace. However the symptoms are the same --- no clutch pedal [pressure].

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G37S Sedan 6MT, Eibach swaybars, Invidia Exhaust, Weaker Clutch Pedal Spring

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Fountainhead

Right, my point is that guys report CSC failure but with no fluid loss, take to the dealer, dealer "changes CSC", and sometimes CSC and MC, then clutch works, but I'm wondering if they only change the MC and that's the issue and charge for CSC work? Either way it's a PIA.

Zensation

What is probably happening here is that somehow their line may have gotten air in it or maybe over heats bad quality fluid. They may change the master and the slave but then the next thing they will do is bleed the system with new fluid. My guess is all they really needed was to bleed the system in the first place cu if either cylinder fails there with be wet spots somewhere and a notice of fluid loss.

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370z NISMO 0675 327 rwhp 280 rwtq - sold.
FD RX7 single turbo 508hp - sold.
Lexus IS-F 5.0L V8