clutch pedal starting to move up very slowly

[dwelch09]

my 2010 aveo 5 clutch pedal is starting to stick again. it did this in the early spring this year and i noticed a grease zerk on the master so i tried to grease it and it felt like the zerk was plugged so i unscrewed it and gave the hole a shot of air from my air gun. i don't think the clutch is worn (85k) because it shifts so smooth and i know how to drive a stick shift car. i am enclosing a pic of the zerk on the master cylinder. i really don't know what the grease zerk is for so i hesitate messing with it much. couple years after i bought it i read about a zerk on the master cylinder so i shot a couple shots of grease in it for good measure. grease went in pretty good back then. i bought this new and has been one of the most trouble cars i have ever had. by the way when it would not take grease the zerk was not plugged. it must have been plugged on down the line. i guess what my question is, what does the grease fitting on the master cylinder do? enclosed is a photo of the fitting. thanks Denny

[petrified.rabbit]

that is a bleeder, not a grease fitting.

[dwelch09]

thanks for the reply rabbit. my retired mechanic friend stopped over this morning and told me this is a bleeder not a grease zerk. don't know what else to check on why the pedal is slow to return so it looks like a trip to the shop.

that is a bleeder, not a grease fitting.

[petrified.rabbit]

it is only the return spring, or clutch pressure. Might be the system needs bled?

[slayerized6]

Did you try flushing and bleeding the clutch fluid at the slave cylinder?