Clutch Troubleshooting (external slave cylinder)

If the clutch has never worked:
  • When assembling the bellhousing to the engine, always check the bellhousing concentricity as described here.
  • Sometimes, when the car is stored in a humid environment for an extended period,  the clutch driven disk sticks to the flywheel or pressure plate.
  • Check the throw at the bell housing throwout arm.  It should be a minimum of 3/4" with full foot pedal travel. (See the manual.) 
  • If it is less, does the arm significantly lag the motion of the pedal?  That would indicate air in the system.  Bleed at the slave cylinder with the front of the car higher than the rear.  Also make sure that the cylinder is mounted with the bleeder at the highest point.
  • If the arm travel is adequate, there's probably a problem with the clutch components or installation.
If the clutch stops working:Are you losing fluid?  Pull the slave cylinder boot back to check whether the slave is leaking.  Replace or rebuild if necessary.
If you are not losing fluid and the feel at the pedal is low or erratic, the master cylinder is defective.  Replace or rebuild.