Re-appearing Air

[snoopdoggie]

I need ideas on how air is repeatedly getting into slave. Complete replacement was performed about a year ago. Clutch, slave, and master. Master was bled several times. Slave has been bled several times. Sometimes it is good for three months then pedal goes soft. Sometimes it lasts a week and the pedal goes soft. No fluid leak anywhere. Have not had to add fluid at any time.

 

[CHKNFKR]

Have you bench bled it?

If not you never got the air out in the first place.

 

[snoopdoggie]

Have you bench bled it?

If not you never got the air out in the first place.

Yes. At installation. A year ago.

 

[CHKNFKR]

What brake fluid are you using? Is the lid on tight?