If it ain't the clutch itself then its prob. your slave or master cylinder.
Check your clutch master cylinder and slave cylinder for leaks,if no leaks,then you need a new clutch kit.
check for leaks
To bleed a clutch on a Nissan Stanza, you need to find the bleed-off valve, usually somewhere near the slave cylinder.
The clutch and brake`s share the same resovoir the clutch master cylinder is attached to the top of clutch pedal and the clutch slave cylinder is inside the gearbox bell housing.
first take off slave cylinder, it should be mounted on your frame, then take off hoses, connect hoses to new slave cylinder. mount slave cylinder back to frame and bleed ur clutch for f*****g hours.
Master Cylinder for brake and clutch are located next to the ABS unit on the firewall of the driver side in the engine bay. Slave cylinder for clutch is located on the bottom of the transmission.
Look for leaking fluid at the slave or master cylinder.
Hydraulic brakes can not be adjusted,check your clutch master cylinder and slave cylinder for leaks,the slave cylinder is bolted onto transmission,has arubber cover toward the end,if these are not leaking,then you may need a new clutch kit.
Is the leak coming from your slave cylinder,it has two bolts holding it on,with a rubber cover,if so ,you need to replace and bleed it and your clutch damper,its on the left side of fire wall,just follow your clutch line from clutch master cylinder,20.00 for slave cylinder.,
on slave cylinder that's bolted to side of transmission and one on clutch damper ,which is bolted on left side of fire wall.
I am paying $195 parts and labor in my 98 maxima