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Issues bleeding the clutch system

 
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Old 02-11-2013, 02:28 AM
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Issues bleeding the clutch system

Hello everyone! I ran into some issues today bleeding the clutch system on my 5th gen today. I read through the clutch problem thread but am still a little confused and was wondering if anyone could offer me some insight as to what I'm doing wrong.

So I filled up my master cylinder reservoir and then had my buddy depress the clutch about 20 times then held it down. I then cracked the bleeder valve on the slave cylinder open (I didn't have a line connected to the valve. not sure if that's an issue?), a tiny bit of fluid dripped out but then stopped. I closed the valve but then the clutch petal has stuck to the floor without any pressure. So I must have gotten air in the system. I pulled the clutch up off the floor by hand and then depressed it another 20 times or so, had it held down, and then opened the valve again, this time fluid spurted out for half a second and then nothing. After multiple attempts varying the length of time that I left the valve open (would have my buddy depress the clutch 20 times, hold it down, then I'd quickly open and close the valve before fluid stopped flowing.) I still can't seem to get the air out of the clutch system. If anyone could offer me some insight as to what I'm doing wrong I'd really appreciate it!!!
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Old 02-11-2013, 03:18 AM
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Re: Issues bleeding the clutch system

havent had to do it on the lude, but on my brothers 3000gt it was pretty straight forward. press clutch, open bleeder, close bleeder, pull up pedal, rinse and repeat. just keep going till you see a solid stream of fluid come out when you crack the bleeder.
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Old 02-11-2013, 08:42 AM
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Re: Issues bleeding the clutch system

You're doing it right so far.


Rocker, that's the same method



it's just very time consuming, keep at it and you'll know when it's ready.
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Old 02-11-2013, 09:35 AM
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Re: Issues bleeding the clutch system

Yeah it took me about an hour and a half to fully bleed my system, with a friend to help. Just keep pumping away, and enjoy the double entendres
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Old 02-11-2013, 01:11 PM
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Re: Issues bleeding the clutch system

You don't wanna leave the valve open for very long at all. If you leave the valve open after your buddy has stopped pressing the clutch down, there's no more positive pressure pushing the fluid out, which could possibly allow air back in thru the slave cylinder.


You wanna close the valve WHILE there's still positive pressure pushing a solid stream of fluid out, hence not allowing air back in the system. About a 1/2 second of leaving the valve open is what I'd recommend.


Having a tube on the slave doesn't really matter, as long as you can visually see a solid stream of fluid or if there's any air bubbles still coming out.
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Old 02-11-2013, 04:26 PM
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Re: Issues bleeding the clutch system

Alright makes sense! Thanks for the help everyone!!
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Old 02-12-2013, 12:44 AM
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Re: Issues bleeding the clutch system

You may also try raising the front of the car slightly it can help force that last bit of air to the bleeder. We always put the front not the lift and raise it as high as we can still reach everything in the bay. Bout a foot or so if your setup allows for that. I can only go about 8"inches off the ground cuz of my drop but it was plenty.
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Old 02-12-2013, 11:39 PM
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Re: Issues bleeding the clutch system

Yeah and I don't think you really need to bump it tat many times. Three times is good enough or at least it was for me. Also it takes at least 30min and no need to have the valve open for that long. Like it was said your partner might depress the clutch pedal and there goes all your work. Also if you see it's taking you hours to get no pressure on the pedal your slave cylinder could possibly be bad. When I was bleeding my clutch it was taking way to long so I asked my friend to let me borrow his vacuum bleeder (which should of finished the job quicker) to get it done and it wasn't getting any pressure so I got a new slave cylinder and it got pressure pretty quick.
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Old 02-13-2013, 12:48 AM
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Re: Issues bleeding the clutch system

is your friend rapidly pumping the pedal? I come to find out when you mash the pedal fast it tends to take forever. Tell him to give you slow pumps in short intervals
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Old 02-15-2013, 03:52 PM
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Re: Issues bleeding the clutch system

Honestly I didn't have to do all that pumping when I swapped my master and slave cylinder. That would take forever!

I bought a hand pump... this one to be exact. Mityvac MV8000 Automotive Test and Bleeding Kit : Amazon.com : Automotive

I hooked up to the bleeder valve, had a friend keep an eye on fluid to fill it up before it got low and I was done in 15mins! No foot pumping. Kept positive pressure and autofills the attached canister.

You don't have to buy one but it sure did make my life easier.
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air in clutch system, clutch master cylinder, clutch problem, clutch slave cylinder, clutch stuck to floor


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