i bought a new master cylinder today and bench bled it and put it on and now when i go to bleed the brakes i get nothing but air? what could be wrong
your using a vacuum bleeder, toss that junk, get a buddy to pump the pedal till theres some pressure then have him hold the pedal down YOU break open the bleeder, air will squirt out, then CLOSE the bleeder, and tell buddy to pump again
BUDDY MUST NOT LET THE PEDAL OFF THE FLOOR TILL YOU TELL HIM TO
i have never in my life even when replacing an entire system used more than 1/2 quart of fluid, but that was wheel cylinders master lines and all