that seems like a hydraulic issue. most of the time when your clutch goes bad it slips wildly or simply wont disengage. your problem seems like the slave cyl isn't pushing the throwout bearing far enough to completely disengage. if you find that your clutch disengagement point is low on the pedal (you have to push it to the floor) this is another good sign that either your clutch master or slave is going bad or the system is taking on air. check and/or replace the master and slave, try to do it as a pair.
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