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Old 03-10-2010, 07:32 AM   #1 (permalink)
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Default Issue with bleeding clutch system after clutch install

Alright, I bled the clutch with a vacuum pump yet I cant get any clutch pedal pressure. I just installed a brand new OEM clutch/PP/TOB/pilot bearing.

This is what I have tried so far:

1. open valve, press clutch in, close valve, lift clutch pedal.....repeat.

Did that for about an hour.

2. press clutch in, open valve, close valve, lift clutch pedal.....repeat.

Did that for the same amount of time.

3. Went and bought a hand vacuum pump, opened the valve, pumped, shut valve, still no pressure. I get to around 15 in/hg of vacuum yet no pressure.



I had the car raised in the front before so I could get under it, now I have it raised in the back in case that will help any air escape.

Why is this being such a bitch? There are no fluid leaks anywhere. Both slave and master cylinders were fine before this....
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Old 03-10-2010, 02:04 PM   #2 (permalink)
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are u getting fluid out of the bleeder? and if you are, are you getting air bubbles to come out?

you shouldnt have to bleed the clutch if you didnt change the slave/master (i think)
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Old 03-10-2010, 02:44 PM   #3 (permalink)
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Yeah I'm not seeing any reason to bleed the clutch, unless you had to remove the master or slave cylinder to replace all of that. Did you make sure to keep the clutch fluid reservoir filled ... did you drain it while bleeding maybe?

Not saying your dumb, but we've all done the occasional bone headed thing.
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Old 03-10-2010, 03:04 PM   #4 (permalink)
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Thanks for the replies!

I had removed the transmission and unhooked the clutch line that goes to the slave cylinder just above the transaxle itself...all the fluid drained overnight from the system.

I didnt put the tranny and slave cylinder in until the next day and here I am.

Over the process of four hours I got the pedal to come up to where it was before. I have been pressing the rod back into the slave with the valve closed to bleed air out of the resevoir( I see small bubbles come out sometimes when I do this.

It has a been a process of hand pumping my vacuum pump to 25 in/hg then opening the valve for a split second the closing before the vacuum reaches 15 in/hgs then pumping the clutch, refilling the resevoir, pushing in the slave cylinder rod.

That has been working very slowly but the clutch is getting slightly stiffer everytime I have gone through the entire process.
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Old 03-10-2010, 03:39 PM   #5 (permalink)
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Try this... push the slave cylinder back in by hand.

basically use your hand and push the shift fork towards the driver side wheel... do it slowly and firmly and you should see the clutch fluid raise in the clutch reservoir as your pushing the fluid by hand back up into the reservoir ....

then have the person let up on the peddle and then hand pump it a few times, hold peddle and open bleed valve and let air out, close bleed valve and repeat.

its all about giving it a little back pressure, with hand pushing the slave in by hand.

Good luck!
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Last edited by sjsotelo; 03-10-2010 at 03:41 PM.
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Old 03-11-2010, 07:26 AM   #6 (permalink)
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if you have 2 people this would work a whole lot better. pump the pedal about 5 times and hold it down and then bleed and close. repeat as needed (kinda like shampoo lol)
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Old 04-01-2010, 05:52 AM   #7 (permalink)
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that is not how you bleed a clutch. doesnt anyone use the search buttons anymore?


run a piece of rubber vacuum line from the bleeder nipple to a resevoir of fluid like a bottle. make sure the end of the line is submerged ALL THE TIME. loosen the bleeder a half turn. pump the pedal repeatedly with the bleeder cracked the whole time , making sure the clutch master stays full of fluid , dont let it run dry. keep going till the fluid pumping out is clean and no air. when it is , tighten the bleeder in the middle of a stroke of the pedal , away you go. this is the only way you can bleed a clutch. wont work like brakes.


id also like to add , there is no reason to ever have to bleed the clutch , or should i say open the system unless you are replacing the lines , master , or slave. if you guys wanna take the tranny out or engine or whatever , undo the slave from the tranny , and whatever holds the lines , and move it out of the way , dont undo the lines. and make sure once the slave is off , noone touches the clutch pedal.
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