My clutch pedal gave way.
Hello. If the clutch pedal has gone to the floor and will not build pressure then most of the time this is caused by a bad clutch master cylinder. I would start by checking the fluid in the reservoir. If it is low then there may be a leak. If not then the master cylinder is more than likely bad. A mechanic would typically test the pressure before replacing it. I would recommend having a certified technician inspect your clutch pedal and make any necessary repairs.