Originally Posted by rangeroso
i have the same problem. i recently replaced the clutch master cyl. and i have to pump the pedal several times on every morning to make it work. i donīt know what to do, the slave is ok and it donīt have any fluid leak. after i pump the pedal many times it works fine for about 10 min. and i have to pump the pedal again about 15 times to make it works again. what can i do? i bleed it. and i think it dont have air inside.
You have two choices.
1 remove the master cylinder far enough to tip it with the push rod down and bleed it through the bleeder screw on the slave.
2 Have someone under the truck to open and close the bleeder screw.Pump the pedal vigorously 8-10 times , push and hold it to the floor and immediately open the bleeder.
What you are trying to do this way is break up the large air bubble in the top of the master cyl into small bubbles that partially mix with the fluid. Note that the air won't stay separated from the fluid but for a second or two , so you have to be quick about this.
Repeat this 5-6 times , then see what pressure you have.