Brake pedal goes straight to the floor

Tiny
4MARTYA
  • MEMBER
  • 2004 FORD F-150
  • 5.4L
  • V8
  • 4WD
  • AUTOMATIC
  • 180,000 MILES
Changed the master cylinder and changed a brakeline. Now I have no brakes at all. I hear a leak from the new line at the fitting I think. And I can't get the driver front bleeder valve to open to bleed. Would that cause me to have no brakes at all?
Thursday, July 4th, 2019 AT 1:17 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Welcome to 2CarPros.

If you aren't able to bleed that, most likely the system has a lot of air in it and is causing the problem and if there is a leak, it needs fixed.

Confirm there is no leak or it is repaired. Then we have two choices, replace the caliper with the stuck bleeder, or work at getting it opened.

When I have one that won't open, I first take a wire brush all around it to remove any corrosion, dirt, rust. Then spray it with a good penetrating oil and let it work at it. See if that helps.

Let me know.

Joe
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Wednesday, March 10th, 2021 AT 11:00 AM

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