Try adjusting it again. Like I said before, mine did the same thing. I just kept adjusting it and after a few times it was fine. Or you could have ghost pedal.
On very light foot pressure on a 2G the pedal drops to the floor all by it's self. ?? Yes. On a regular pedal push, the seal seals fine and the clutch works normally. On a very light push, the seal does not seal well and fluid will bypass it. Since the 2Gs have a heavy assist spring, the additional assist is enough pressure to keep the pedal going towards the floor all alone. Quite disturbing to watch. Replacing or rebuilding the master cylinder will fix this.
Try this link there are some tips on getting you clutch adjusted right.
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