[Brokensandwich]

I just replaced the clutch hydraulic line (rubber hose that connect the steel line from the master cylinder to the operating cylinder). Removing the hose drained all of the fluid. After installing the new hose and refilling the reservoir the clutch pedal stays on the floor. I have to pull it up and then push back down, no resistance. If I open the bleeder valve and have someone depress the pedal fluid comes out. If I open the bleeder and work the operating cylinder same thing but the system never seems to pressurize. I'm at a total loss. Any ideas?, why am I not getting pressure? I've filled the reservoir twice now so fluid moves through the system. Picture is of the hose that was replaced.

2004 3.3L 4X4 126K.

 

[dejablue]

Some times when you open the system the cyl goes bad .

 

[Brokensandwich]

Some times when you open the system the cyl goes bad .

Master cylinder?

 

[dejablue]

Yes the master cyl for clutch pedal, when they get old the o-rings get soft and try to expand but they cant because the pressure is holding them in place ,when you open the system for just a few minutes they expand and the first time you push the pedal the o-rings get pinched ,so i think that is the first thing i would do. Is there any fluid leak on the other end which is the slave cyl if there is i would get a new one also.

 

[Brokensandwich]

You're right. Replacing the master worked. I have the slave coming and for $13 I'm just going to replace it as well for insurance. There's no leaks from the slave but I'd rather not do this twice.

 

[Brokensandwich]

So now, a month later, the last two mornings the clutch pedal has been on the floor in the morning. It's not bottomed out but an inch or so above. If I pull it up it springs right back and is fine after that. I know I can still engage the clutch since I didn't notice right away when driving.

Any ideas? No evidence of leaks.

 

[dejablue]

Air in the line

 

[Brokensandwich]

There are only a few ounces of fluid in that system. Not really sure where the air is going to come from. I bled it pretty thoroughly after the master cylinder change.

 

[Brokensandwich]

I don't think it's air. When I bleed the clutch after I close the slave valve and let of the clutch it stays on the floor. I'm starting to wonder if the master cylinder I got if NFG. There's no air coming out when I bleed the system.

 

[dejablue]

Did you bench bled the air before you installed it

 

[Brokensandwich]

I don't know what bench bleeding means. I bled the system per the tsm. Remember I did this a month ago and the problem started within the last 2 days.

 

[dejablue]

This is the first step when changing a master cly there should have been a small tube and instructions in the box.
https://www.youtube.com/watch?v=kEPXgDGU6_0

 

[bossX]

This is the first step when changing a master cly there should have been a small tube and instructions in the box.
https://www.youtube.com/watch?v=kEPXgDGU6_0

Always love reading your advice, right on the money 99% of the time and I learn a lot. My current one is auto so I have no use for this but always good to know.

 

[Brokensandwich]

This is the first step when changing a master cly there should have been a small tube and instructions in the box.
https://www.youtube.com/watch?v=kEPXgDGU6_0

That's for a brake master cylinder, not a clutch. There were instructions as well as the TSM and none of them indicate any additional steps other than installation.