i have put in a new clutch and slave cyl and the truck still wont go into gear when it is running. itl go into gear when it is not running. now i have bled the whole clutch system a couple of times. and still wont go into gear. i bought a master cyl about 4 months ago. keep in mind the it was not brand new and came off of a truck that had been sitting for a while but he told me that he bought it new and had only used the truck a couple of times and then parked it. So in other words the master cyl hasnt been used that much. COULD THE MASTER CYL STILL BE THE PROBLEM??

 

Yes the used master could be the problem .
One thing you could try is to take out the master ,reservoir ,and the line going to the slave.
GENTLY ,again , GENTLY , mount the master in a vise with the actuating rod pointing down.
The reservoir must be held above the master cylinder.
The slave line has a check valve in the end that connects to the slave.
Push the actuating rod into the master , at the same time depress the check valve in the end of the line on the slave end (use a nail,screw,etc).
Release the check valve.
Then release the master actuating rod.
Do this 6-8 times.This will bleed all the air from the master.
DO NOT LET THE RESERVOIR GET EMPTY.
Reinstall the master and you should be good to go.

 

ill try that thanks