G.A.H

I have a 2007 jeep jk and im having problems with my clutch not disengaging first the problem was with the pilot bearing i changed it and changed the clutch with a centerforce dual friction and changed the release bearing and was fine for a year or less now i can't disengage the clutch i tried bleeding the slave cylinder no air bubbles came out so i changed it since i did buy one a while ago and still having the same problem i tried to look for leaks no leaks and the master cylinder is not leaking internally cause i did block the line going to the slave cylinder and tried pressing the pedal it was rock solid still can't figure out what the problem is but there is sound coming out from the area where the slave is when i press on the clutch please help

G.A.H

Go to this video if you want to hear the sound it's making
https://youtu.be/6AV0nekxrdE

Mr.T

When pressing the clutch, does it feel any different -- less pedal pressure? The squeak/creak sound in the video could be the pressure plate, but it could be the ball/socket on the end of the slave cylinder push rod, see this write-up on the slave. For reference here's some notes from when I replaced the clutch in my '08.

The noise and the clutch not disengaging may or may not be related, but if you're confident that the slave is working the only option it to pull the transmission and troubleshoot from there.

G.A.H

The pedal feels good but right at the end it felt like there's air trapped in the system and guess what I went under the jeep removed the slave cylinder to bleed it as you know in a jk on a flat surface it is impossible to get all the air out and there was a lot of air in the system and i added grease to the end of the slave cylinder and it's not making the noise anymore thank you but now after a day it's starting to feel like air is getting in the system and the slave is not leaking at all looked under the boot and no oil even the master has no leaks bone dry i really don't know where it's coming from I'm thinking of buying a new slave and master cylinder and replace them both even though the slave cylinder is new

Mr.T

Maybe try bleeding again since it worked last time to expel some bubbles. It should be impossible for air to get in once it's assembled, so maybe it's just a matter of temperature and pressure affecting the small amount of air left in the system -- And getting that air out.

One of the methods I've used is to attach clear tubing to the bleeder and tilt the slave so the bleeder is the high point, then use a hand-held vacuum pump with a trap attachment in the tubing that separates and collects the liquid. The pump and trap attachment are usually part of a set for testing vacuum operated devices and bleeding brakes -- https://www.amazon.com/gp/product/B073LMMJ4P/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

G.A.H

Now after thinking about it a little more you're 100%right i never thought about temperature cause the problem alway gets worse when the car is at operating temp i would definitely bleed the system again and try your method after I'm done with exams this week you're awsome thankyou alot

Mr.T

Thanks for the kind words, good luck with exams.