So one day i lost pressure in my clutch and i had no pressure at all, i had found out i ran out of fluid, and thought i may as well change my slave while im at it, and my master is pretty new also, i have bleed it 3 times, and i still have to go to the slave pump that then i get pressure to my clutch for about 10 pumps then it goes, i have bleed it with my dad, and it does good that evening when we bleed it. but then in the morning (its cold here) when i go to start it it has no pressure, what am i doing wrong?

 

Are you SURE you don't have a leak in it somewhere? Check all the fittings and lines and look for leaks. If you have no leaks then you could have a bad slave or master, even if it is new or newer.

 

Are you losing fluid ?

 

It is possible to have a loose connection that leaks very little but will suck in air as the pedal is pushed.

another thing the rubber hose after time can get soft so it swells when the pedal is depressed.

I think your getting air!!

Comes back to are you losing fluid??

 

I replaced my whole line with another truck, that i knew it didn't leak, and still same thing???! am i supposed to have pressure in the clutch while bleeding? -cause i don't, and afterwards bleeding how am i supposed to get pressure in the clutch- i pumped the slave, is that correct? and thank you guys for the feedback!

 

It doesnt take much to have no clutch pedal to some clutch pedal. The push rod really doesnt have that much travel. I have seen them mounted incorrectly.

I had a similar problem and removed it off of its mount, just to make sure it would operate without pressure on it, I had my helper to pump slowlyyyy so as I could watch. It did, when I went to remount it is when I noticed they had not put the little bracket back on when they installed the slave.

 

Bracket is installed, and master cylinder is installed correctly, me and my dad are going to re-try bleeding it here in a second.

 

still a no! any suggestions? im lost and confused

 

Did you bench bleed the master cylinder after it was run dry? You might also try pulling the whole system (master, line and slave cylinder) as a unit and bleeding it with the master hanging up in the air. Make sure the master is the highest point and pump the slave to push the air up and out.

 

I heard that bench bleeding a clutch master cylinder does not matter because of the bleeding with slave, is that true?

 

Not true in the least. I get lucky every once in a while and can gravity bleed a system with all new parts and it's fine, but not often.

 

valve could be stuck inside the master cylinder causing it not to hold pressure

 

Yes, OLTOY. you got that right, i had got a new master, i bench bleed it and got it going! thanks everyone! I appreciate it!