This came from another thread: "...but are you bleeding the air out by pumping the clutch, or using a pump from the slave cylinder up through the master cylinder. I know a lot of guys that try to bleed it like you would bleed brakes, but you never really get all the air out that way"

I tried bleeding it with a vacuum pump and assistants like a brake system but only got about 1/4 pedal. It's full of new fluid now though

I have also been advised to "gravity bleed" it. I tried that but I am not entirely sure I did it right.

How exactly are these clutches supposed to be bled?



Thanks,

 

Here is a quote from http://www.howstuffinmycarworks.com/...h_slave_2.html

"...fill the clutch master cylinder reservoir with new clutch fluid and open the bleeder located above the hydraulic line on the slave cylinder to bleed the air from the system, gravity is your best friend to bleed this system but in the event that you weren't able to bleed all the air out of the system you can do it in the same way you can bleed the air from the brake system."

I had the clear line from my vacuum pump on the bleeder. It was full of fluid. The only way air could have entered the slave from the open bleeder valve is through the threads.

Is it likely that the master cylinder is the culprit?

I am considering replacing the master cyl, line, and slave cyl since the truck is 20 years old anyway.

Thanks,

 

You only pump the pedal, a lot. Every time you open the bleeder you have to start all over.

 

I assume it is supposed to be full-stroke top to bottom pumping.

It won't return to the top position without pulling it up.

Thanks,

 

Yea, pull it up.

 

Clutch seems to be happy now, thanks.

 

miataman ,,, which techinique worked? im having the same issue. clutch engages close to the floor and EVERYTHING is brand new , and I cant get any air bubbles after 4 bottles of dot 3

 

I did mine a month or so ago. It requires lots and lots of pumping. Probably 45 or 50 cycles, open bleeder valve/shut it/and pump until you get pressure, before I got a firm pedal.

 

Can get a firm pedal by bleeding into a jar with a hose. Come back later and pedal is soft. While bleeding I'm only getting a trickle come out of it. Thoughts ???

 

I think you should put all your truck's details & history into your signature so we know what you're talking about. Read this caption:


(phone app link)