all new brake parts,mastercylinder,brakepads,brakebooster.have no compression in pedal.
Year : 1994Make : GMCYear (other) : 1994Make (other) : pontiacModel : grandprix seEngine : 3.1
newbrakepads all around,mastercylinder,brakebooster with all done i have no break pedal
Hello and good evening, What have you tried so far? I see the parts you installed, can you take me down, step by step, how you got to this point?
Your JA Expert,
my son needed new pads all so i did that,bled the brakes thats when i lost pedal so i bought new mastercylinder and booster still i had nothing
Does your car have the rear disc brakes that you need to rotate the pistons back in?
Ok, we have to start with getting fluid back from the master then move down. First thing, I'd like you to do, is install a pair of vice grips to the parking brake ratchet levers and ratchet them until the brake pad is right up to the rotor. If you don't bring the pads close to the rotor the pedal will never be high. After you do that, bleed the brakes and the master cylinder. Pump the brakes, have someone hold the pedal, and crack the lines on the master until you have a stream of fluid come from the fitting. If you don't have pressure there, you will never get fluid down to the calipers. Once you get fluid there, Go in the sequence of RR, LR, RF, LF. Instead of allowing the fluid to drop to the floor, insert a hose from the bleeder into a bottle of brake fluid. Open the bleeder, pump the brakes slowly 5 times, making sure the pedal is returning all the way up between pumps. Close the bleeder and move on to the next wheel. Keep working in this sequence and repeating until you see no more air bubbles in the bottle of fluid and get a firm high pedal.
ASE Master Tech w/ 20+ years in the field. Self employed for 9 years. Member of AUTOLAB radio show.