i have a 2000 civic with an h23a and a h22 tranny 5 speed lately in the mornings my clutch pedal is soft and i have to pump it to get it to go into gear. once im driving it works fine but when i stay on a gear for a while or im on the highway clutch pedal gets soft again . i have to keep pumping it every once in a while in order for it to work. i changed the master cylinder it worked fine for 5 days no problem. i thought i solved the problem, i bleed the clutch fluid, and still same problem and when i did the swap a month ago the slave cylinder was changed to wut else could be the problem ive been like this for two weeks now...

 

Re-bleed the clutch.....sounds like there's still an air bubble

 

I have the same issue, but I also have to add fluid every 3-4 days I have only replaced the Master whats next?

 

find the leak.