Clutch help!

[theox69]

Yesterday afternoon, I went to start my car and my clutch pedal went straight to the floor.
I don't know if it's my clutch master cylinder or slave cylinder. How can I tell and do any of you have any other ideas/recommendations?
Thanks alot.

[jlevie]

Get the car up in the air and check for leaks at the slave cylinder and lines. If you find no leaks, the master cylinder is bad.

Not that to fully check the slave cylinder you'll need to dismount it from the bell housing. And if either the master or slave has failed, it is best replace both at the same time.