RE: have replaced clutch master cylinder and bled the lines and still no fluid pressure...
yea those things are a bear at times to bleed, heres my trick , try to bench bleed the master first, crack the bleeder on the slave get a drain pan an let the fluid slowly drip down, keep topping the master off as needed ( leave the cap off doing this ) after you got a good flow coming outta the slave tighten bleeder , __ NEVER NEVER push the pedal all the way down , just do slow long 1/4 to 1/2 pedal travel down hold it for a min ao 2 an pull it up -- if you have a helper have him watch for air bubbles in the master when the bubbles stop popping , pull the pedal back up an do it again. in time you will get a good strong pedal , at that point push it down all the way an open bleeder, This way works every time for me !!!!!! . I get called to bleed the other guy's job when they finally cant get it, Ive seen them go thru a gallon of brake fluid trying , lying on the floor crying an cussing , An I do it in like 15 minutes .An yes the hand held vacumm works good too just dont get it " brake fluid " in the pump assy badness occurs then .