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Clutch Master Cylinder

My Clutch Master Cylinder keep on giving problems. replaced several times with new one. Instead of pushing the brake fluid it starts sucking it. And then off cause no clutch. What can be the problem.

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You have an air leak problem lower down

Posted on Nov 25, 2013


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  • Cars & Trucks Master
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Check your clutch slave cylinder.

Posted on Nov 25, 2013


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Posted on Jan 02, 2017

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SOURCE: clutch cylinder inside car is it broke

you have to bleed the air out of it. If there is not fluid leaking from the master cylinder on the firewall.it can leak on the inside of car or the out side if the master cylinder is bad.first make sure the reservoir stays full then open the bleeder on slave cylinder. this is called gravity bleeding. once fluid comes out, tighten bleeder, pump pedal one time loosen bleeder while holding clutch pedal down and then tighten. do this repeatedly until no air comes out. you can pump pedal several times,then hold and bleed however you like but I have better luck with individual pumps. just make sure that the lines hooked to slave cylinder are tight and there are no air leaks. and that the line does not go below the slave cylinder because sometimes air gets trapped in the lowest part of system.

Posted on Jan 12, 2009

  • 6 Answers

SOURCE: leeking master cylinder vw trasporter t4 2001

Hi,

The leak is only a symtom the real problem is the pedal box! it will have broken!

put your head in the footwell, press the pedal by hand while watching the master cylinder.

If you can see ANY movement of the master cylinder then the mounting has failed!

Hope that helps

Posted on May 11, 2009

  • 336 Answers

SOURCE: Abnormal clutch pedal operation

You've replaced the master, the slave, now I would check to see if the throwout fork will move by hand. If you can move the fork by hand I would say that your pressure plate and or throwout bearing are worn out. First try to just gravity bleed the system. If that doesnt work, it may be time for a clutch, pressure plate, and bearing. The pressure plate spring pushes the pedal back up and depending on how many miles and driving habit those little arms on it break off and just wear out. I hope this helps you.

Posted on Aug 19, 2009

  • 20 Answers

SOURCE: My 1989 Ford F150 manual transmission is stuck in

YOU NEED TO PULL THE TRANS AND REPLACE THE SLAVE CYL IF THE FLUID IS LEAKING AT ALL ONE WAY OR THE OTHER YOU WILL END UP REPLACING THE CLUTCH MASTER CYL BUT THIS TIME YOU NEED TO GAIN ACCESS TO THE SLAVE CYL AND APPLY PRESSURE TO IT HOLDING IT BACK WHILE SOMEONE PUMPS THE PEDAL AND YOU BLEED IT WORKS

Posted on Mar 04, 2010

  • 2 Answers

SOURCE: problems with clutch master cylinder on a suzuki

I too am having problems with my 2006 GV clutch master cylinder. I noticed gradually over several weeks the gears and clutch pedal were degenerating and then the cluth gave completely. My mechanic took a look around and said the cylinder is the cheapest one he has ever seen, it's just a piece of plastic apparently! Is going to hopefully get the part this week or next, though he said as it's such a cheap and nasty part its likely it will happen again in the future. Not happy!

Posted on Mar 15, 2010

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1 Answer

Why does mybrake resevoir over flow when i depress the brake caliper


Hello Justin, Since you just replaced the brake pads, you had to push the caliper pistons into the bores. That pushed the brake fluid into the master cylinder and overfilled it. I suggest you obtain an inexpensive turkey baster. ( I got mine from the dollar store.) Use it to suck out as much brake fluid from the master cylinder as you can. DO NOT spill any brake fluid on you or the car finish. It WILL damage painted surfaces. Refill the master cylinder with new brake fluid of the proper DOT specs for your auto. I also suggest you bleed the old fluid out of the brake hoses and lines . Over time, brake fluid attracts moisture and turns a dark color. It is also good to bleed out any air that might be in your braking system.

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1991 honda accord hydraulic clutch will not pump up


The new master cylinder is probably defective. Very common problem with aftermarket parts. Have them give you a new one.

Jun 13, 2014 | 1991 Honda Accord

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I have a 1985 toyota pickup with 22r. Im having problems with my brakes. I have to pump the brakes 2 or 3 times before I get any kind of brakes. I have replaced the master cylinder and bled the brakes in...


Some times the first bleed after changing the Master Cylinder doesn't get all the air out of the system. It sounds like an air bubble or two have "traveled" to the brake cylinders. Try bleeding them again.

Jun 28, 2011 | 1985 Toyota Pickup

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My 1996 Chevrolet K3500 Dually has a hydraulic clutch, how do I change the fluid and bleed it.


FIRST REMOVE ALL OLD FLUID FROM CLUTCH MASTER CYLINDER YOU CAN USE A SIPHON YOU HAND PUMP.AUTO PARTS STORES SELLS THE HAND PUMP SIPHONS. THEY DONT COST MUCH AND KEEP FROM MAKING A MESS.SIPHON OUT MUCH AS YOU CAN THE OLD FLUID IN THE CLUTCH MASTER CYLINDER.THEN POUR IN THE NEW FLUID DOT 3 BRAKE FLUID IN CLUTCH MASTER CYLINDER.OKAY YOU NEED A HELPER.LOCATE THE SLAVE CYLINDER.REMOVE SLAVE CYLINDER HOLD SLAVE CYLINDER 45 DEGREES WITH BLEEDER SCREW LOCATED AT THE HIGHEST POINT.HAVE A SMALL DRAIN PAN UNDER SLAVE CYLINDER.HAVE HELPER FULLY DEPRESS AND HOLD THE CLUTCH PEDAL THEN OPEN BLEED SCREW.CLOSE THE BLEED SCREW AND HAVE HELPER RELEASE THE CLUTCH PEDAL.REPEAT THIS PROCESS UNTIL ALL THE OLD BRAKE FLUID AND AIR BUBBLES LEAVES THE HYDRALIC SYSTEM AND WHEN YOU CAN SEE GOOD STREAM CLEAN FLUID NO BUBBLES YOU HAVE GOOD SOLID CLUTCH ALL IS GOOD.MAKE SURE THROUGH THE BLEEDING PROCESS YOU DONT LET CLUTCH MASTER CYLINDER RUN DRY OR YOU WILL HAVE TO START OVER.KEEP CLUTCH MASTER CYLINER FULL BRAKE FLUID WHILE DOING THE WHOLE BLEEDING AND FLUSHING PROCESS.

Jan 22, 2011 | 1996 Chevrolet C/K 3500

2 Answers

Clutch suddenly has no resistance and car won't shift gears. Fluids were low, have put fluid in the reservoir but still doesn't work. How do you bleed a clutch line?


on the transmission there is a slave cylinder that works like a brake cylinder, when you apply pressure to the clutch pedal a rod inside the vehicle under the dash pushes into a clutch master cylinder, (almost like a brake master cylinder without the reservoir, as the clutch master cylinder works off the brake master cylinders reservoir) the plunger in the clutch master cylinder applies fluid pressure to the slave cylinder,(located down on the trans near the clutch fork assembly) which projects a piston rod into the clutch fork dis-engaging the clutch. To bleed the clutch slave cylinder locate the bleeder screw on the slave cylinder,break loose so it loosens and tightens easily. Check fluid in brake master cylinder reservoir,fill if needed, while bleeder on the slave cyl is closed have a helper push clutch pedal to floor and back 7-8 times, (At first the clutch might stay at the floor, just pull it up by hand or foot and continue) after several pumps with no rest time push pedal to the floor and hold down with foot pressure, at this time loosen the bleeder on slave untill fluid leaks out, watch for air bubbles, close bleeder and repeat untill there is no sign of air bubbles, (make sure to check fluid in the brake master cylinder and keep fill as needed, do not let fluid get less than 1/2 empty as it might **** air and you will have to start over) If this does not bring clutch to operate then you need to check if slave cylinder is reachig its full extension of push rod or not. If it is not then you will have to replace the clutch master cyl or the clutch slave cyl or both as seals are bad and wont hold pressure. Or you need to inspect the clutch fork,the throw-out bearing, or the pressure plate fingers and clutch plate for failure or broken bent parts. I hope it turns out to be a easy fix on that clutching thing.

Jan 14, 2011 | 1995 Nissan Pickup

1 Answer

How to bleed the clutch on a saturn 97


one way to bleed it is by pulling the piston like slave cylinder with the rod out of the transmission and by pushing the rod into the slave cylinder several times, make sure you have plenty of dot3 brake fluid in the clutch master slave before you do this. by pushing the rod into the slave cylinder it acts like doing a brake job it bleeds the air out into the clutch master slave cylinder and sucks in the break fluid getting rid of all air in the system. thats the only way to bleed those systems seeing as they are sealed systems

Aug 22, 2010 | 1997 Saturn SL

3 Answers

I am having an issue where the brake pedal goes all the way to the floor before it will work. From what I understand it may be the brake master cylinder malfunctioning. I am considering replacing it...


Check the vacuum booster first
Shut the car off after it idles for 3 minutes
Apply your foot on the brake and hold
If the pedal seems hard at first and did not go down all the way keep your foot on it for two more minutes
If the pedal gradually goes down to the floor the brake booster is leaking
If not start the car and let idle again
\With the car still idling step on the brake pedal again and hold
If the pedal goes to the floor in a second the master is shot instead

Jun 22, 2010 | 1986 Toyota Camry

2 Answers

Problems shifting, clutch feels fine.


Most likely the master cylinder. Both usually need replaced together. If one fails the other will most likely soon after. Then bleed system again.

May 23, 2010 | 1997 Mazda MX-6

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My 1994 ford rangers clutch pedal just lost all pedal


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A. For mechanical type,- Check the clutch cable as
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pedal and the clutch lever near the transmission.
B.For hydraulic operated - Check the level of the
hydraulic oil at the cylinder of the hydraulic
actuator under the hood. This actuator is
directly connected to the pushrod driven by the
pedal. If the actuator is leaking, you have buy
a repair kit (Hyraulic clutch repair kit for Ford
Ranger 1994 MOdel.) These items must be
repaired to activate your pedal.

Oct 14, 2009 | 1994 Ford Ranger Supercab

3 Answers

Replace brakes. now they go to the floor. bled air


When you fixed the brakes, did you take the lid off the master cylinder. I just wonder if you spilled out your brake fluid. The only reason the pedal should go to the floor is if the brake fluid is gone or the master cylinder is not working. Check the fuse. Check the brake fluid level. The pedal only goes to the floor if there is no back pressure in the lines between the master cylinder the lines to the brake pistion on the calipers. Please give me a good ratin and keep me informed.

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