Was pulling the car out of the garage a few days ago. Pushed in clutch, started car, put shifter in reverse and let out on clutch. Normal let out on clutch, pulled out of garage slowly, but then pushed in on clutch and nothing happened. Still headed right for my other car! Yanked it out of gear. By pushing the clutch pedal clear to floor, the clutch does slightly disengage so I could pull the car back into the garage. Any suggestions on where to start to diagnose / fix the clutch? Thanks in advance.