Originally Posted by Dave_J

When you loosen the bleeder screw and put a Myovac suction type device on and pull a vacuum it can suck air around the screw threads.


Very true. Use a clear hose on the bleeder, watch and listen. You will see it. Pulls air around the threads and out the bleeder.

It can trick you into thinking it still has air in it. That's why I like to push, rather than pull, fluid through the last few times I crack the bleeder to see what's coming out.

Last edited by CMcAllister; 02/14/20 01:45 PM.

If the results don't match the theory, change the theory.