I have a 98 eclipse gst and it keeps loosing preasure. I have changed the slave cylender and the master cylender and it still looses preasure. The weird thing is that as long as I pump it up it will build up preasure but when im driving it the preasure will continueously leave. So basicly when I get to a light or while im driving i have to pump the clutch up so that it builds preasure back up. Any help would be greatly appreciated.

 

you need to bleed the system

 

I did bleed the system. Whenever it looses pressure and I pump it back up it builds pressure back up but not enough so basically I have to bleed the clutch everyday. But after I bleed the clutch it goes back to normally until I'm driving it. I just replaced the reservoir and cap. It seems to be holding pressure now. So my guess is that my cap wasn't creating a good seal allowing air into the system.

 

My son has a 95 that does the ooposite. His builds up pressure in the slave cylinder and it doesnt retract back enough to keep the clutch from slipping. Then I have to bleed it out for a couple more days of operation.