Now when I bleed the brakes the pedal goes to the floor

JAY WELTY

MEMBER
1998 FORD F-150
5.4L
V8
2WD
AUTOMATIC
95,000 MILES

I had a broken brake line and replaced 2 of them also replaced front 2 calipers. Now when I bleed the brakes the pedal goes to the floor. I rechecked all the lines, flairs look good and are tight, I don't see anything leaking, fluid levels are okay. I've tried to bleed them several times and I still have a pedal that goes to the floor.

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

A brake pedal that goes to the floor is one of two things. First, there is air in the lines. Second there is a leak either external or internal to the system. If you can't find any external leaks then it could be the master cylinder. The best way to find this, is to cap off the lines from the master cylinders so that when you are pressing the pedal you are just moving the master cylinder. If the pedal goes to the floor then there is an internal leak to the master cylinder.

Based on what you have done, I suspect you still have air in the lines.

Take a look at these guides and let me know what questions you have and how much fluid you have used to bleed the brakes. Sometimes it takes a full bottle to get all the air out.

https://www.2carpros.com/articles/how-to-bleed-or-flush-a-car-brake-system

https://www.2carpros.com/articles/brake-pedal-goes-to-the-floor