I have a 1996 civic dx standard and my clutch pedal is dropping to the floor when i go to start the car. not only does it do it when i have to start it but it drops some times while i drive!!!!!!! its kinda scary :/ . it only happens in the winter, i have had this car for about 2 years and every winter when the car is cold the pedal drops. it never happens to me in the summer and in the winter when the car warms up it seems to be fine. when the pedal is engaged it has good presure. i checked the fluid and its fine. i did some research on my clutch system and found out that is a hydrolic system and that tweaking it should not be a problem because in theroy it should self correct itself. this is my first car and i have no idea about clutches. i have seen other people say to bleed the system because there might be air in it but none of there clutch problems really relate to mine. would really be beneficial if someone could help me out thanks...

 

Pedal dropping to the floor can be a few things IMO. Air in the system, failed Master Cylinder, or failed slave cylinder. I am sure there are other things, too.

Search on google on how to bleed the system. It is quite simple.