4mdharris
you can buy a vacuum tester to bleed your brakes or if you have time to just sit a watch your resivoir,then you can do this little trick.un-loosing all the bleeders and let them flow freely,when the resevoir gets low fill it back up do this like about 4 times and re=tighten bleeders then check your brakes if the feel fine your done if not repeat steps above. master mechanic 37yrs