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Problem-Bleeding

 
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Old 01-28-2011, 03:55 PM
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Problem-Bleeding

So the other day I couldn't shift gears anymore so I figured it was the cylinders (turns out both were leaking). I replaced the slave cylinder and the master cylinder for the clutch. After a long time of trying to bleed the system through the slave cylinder, I still get no pressure and the clutch pedal sticks to the floor. Here is my technique:
1. Pump 12 times
2. Keep it at the top, open slave bleed screw.
3. Push the clutch pedal to the floor (some brake fluid comes out)
4. Tighten the bleeder screw.
5. Pump again.
I've tried this for a long time with no success. I've gone through a whole bottle of pre-stone synthetic dot3 brake fluid.

any suggestions?
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Old 01-28-2011, 05:08 PM
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Re: Problem-Bleeding

Was the master/slave bench bled before you got it? If not, its going to be a p.i.t.a. to bleed.

You need two people.

Whoever is sitting inside needs to pump the clutch 2-3 times (not twelve, unless of course you don't like your master cylinder) and only push the pedal about halfway when pumping, then hold it to the floor.

While the pedal is against the floor, have the other guy crack the bleed screw. The fluid will squirt out, then lose pressure and start to dribble out, when this happens, you need to close the bleed screw quickly.

Once the bleed screw is closed, release the clutch pedal (pull it back up) and check the level of fluid in your master cylinder resevoir, topping off as necessary.

Repeat the process over and over until only pure fluid (no air) comes out of the bleed screw, then do one more for good measure.




If it still doesn't work after that, you may have a defective master and/or slave or other problems in the clutch mechanical and/or hydraulic systems.
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Old 01-28-2011, 05:38 PM
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Re: Problem-Bleeding

No, I did not bleed the master cylinder. How would I do that? is it possible to do it while its installed on the car?
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Old 01-28-2011, 09:43 PM
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Re: Problem-Bleeding

does your peddle just hit the floor when pushed to the floor and stays there ?
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Old 01-28-2011, 09:53 PM
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Re: Problem-Bleeding

definitely need two people! it helps so much
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Old 01-28-2011, 11:49 PM
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Re: Problem-Bleeding

You don't need to bleed the master cylinder, just make sure that the fluid level doesn't get too low or you'll pump air back into the system.

Make sure that the end of the slave cyl. with the bleed nipple is the highest point, you may need to jack one side of the car up. You'll never get all the air out if the nipple is lower than the rest of the cylinder.

Bleed the system the way that havikprelude described.

If it still doesn't work, check the line for leaks, check the back of the master cyl. for leaks (under the dash, where the rod from the pedal enters it. you'll need to remove a rubber boot to check here.

If you still can't find anything wrong it could be a problem with the clutch fork or the pressure plate.

Ausluder.
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Old 01-29-2011, 02:02 AM
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Re: Problem-Bleeding

u said that u replaced both right. well u might have to adjust the master cylinder where it attaches to the peddle cuz thats wat happened to me. i got a little bit of pressure but never enough to fully engage it and such then i remembered that u can adjust the peddle
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Old 01-29-2011, 09:19 AM
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Re: Problem-Bleeding

YOU DO NOT NEED 2 PEOPLE FOR THIS JOB, ONLY IF YOUR HALF MENTALLY UNSTABLE, your first problem is your not getting pressure, lets eliminate things, are your lines FULLY attached? are you making sure you fill up the resevoir everytime u dump fluid out of the slave? you making sure ur closing the slave all the way after u pull the pedal back up? positively see no leaks coming from anywhere? once thats done, make sure your master cylinder is assembled correctly, it will take 17 years to get pressure at that rate of assembly, once thats done, TOP off the cylinder resevoir and start your process, OPEN your slave, SLAM down on the pedal, CLOSE the slave TIGHTLY, pump the pedal, repeat this process for about 5 mins, if u dont build pressure YOU HAVE A LEAK :)
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Old 01-29-2011, 01:12 PM
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Re: Problem-Bleeding

^
listen to that guy- though two people sure makes it easier though imo - one to pump one to open and close
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Old 01-29-2011, 03:51 PM
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Re: Problem-Bleeding

ha had the same prob when i replaced my clutch and then had to bleed out the lines. ite what helped me was putting a hose on the end of the bleeder on the slave and run it up and into a bottle. this makes sure that no air gets back into the lines and u can see the bubbles coming up the hose. I bled mine with a friend so it is ALOT! easier to hav some1 help ya but yea only took like 2 or 3 min to get all the air out after i did it this way.
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Old 01-30-2011, 01:11 AM
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Re: Problem-Bleeding

:) if u need further info i would love to retype what i said lol
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Old 01-30-2011, 02:23 AM
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Re: Problem-Bleeding

I am going to throw my .02 in and say I've helped with some preludes that needed to be jacked up in the front for the air to bleed out faster.
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Old 01-30-2011, 09:47 AM
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Re: Problem-Bleeding

why the hell would u do that? doesnt matter if its jacked up or not lmao its pressurized my man
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Old 02-20-2011, 09:35 PM
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Re: Problem-Bleeding

I just used a mity vac connected to the slave bleed valve and did it with one guy. Piece of cake...
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