I have never used a vac brake bleeder system. Always done it the old school way (2 guys) 1 pumps pedal 1 works the bleeder valve..
Is there an advantage?
I ask becuase I'm having problems with a spongy pedal
and have bled all four wheels sevral times. New pads and rotors all around and caliper and lines look to be in good shape. oh replaced master cylinder also. Is there still
air in the line? <img src="/forums/images/graemlins/confused.gif" alt="" />
Will a brake bleeder help? Any ideas on the problem?

My jeeps got a very similar problem to yours. Ive got ABS and i think I remember hearing somewhere that if air gets into the ABS valve controller or lines connected to it then you have to have somekind of special tool to get the air out of it. Not a vacuum bleeder but something that a dealership would have. I've bled mine several times also and it still feels a little spongy. Although I think this condition might also be caused by a weak booster or spongy brake lines. I don't really know just throwin ideas. <img src="/forums/images/graemlins/cheers.gif" alt="" />

I remember reading somewhere that with ABS the key must be in the on possition to blead the brakes properly. I can't remember where though.