I replaced my 2 rear wheel cylinders and I replaced my left front caliper because the bleeder screw broke. I bleed the brakes and everything was nice and tight. Now when I start the car the pedal goes to the floor. I called advanced and autozone and they said I have air in the lines or I have a leak. I checked for leaks nothing. I called napa and he said it is either the master cylinder the brake booster or the abs pump. With the car off when I pump the brakes it goes to the floor and does not build up pressure. Any suggestions. Thanks.
If sure all air bleed out then seems master cylinder is faulty
June, 7, 2012 AT 6:20 PM
That's what I thought how would I know if the booster is broke
June, 7, 2012 AT 6:24 PM
Pedal would be VERY hard
June, 7, 2012 AT 6:27 PM
Oh oksorry one more question. Could the brake booster check valve be bad. It has never been changed before. Thanks.
June, 7, 2012 AT 6:29 PM
Then you would hear hissing and engine would die at idle
June, 7, 2012 AT 6:31 PM
No it is the master cylinder then thanks for clarifying this up for me.
June, 7, 2012 AT 6:35 PM
Try bleeding at master see if you get pedal and rear shose need to slightyl drag as drum is turned
June, 7, 2012 AT 8:19 PM
I found out that the brake fluid cap the little rubber piece under the cap fell into it. I washed the inside of the master cylinder out. Is it still safe to use once the water dries up on the inside. Thanks