Brake pedal goes down to the floor before stopping the vehicle

1970 MERCURY COUGAR
78,000 MILES • 5.8L • V8 • 2WD • AUTOMATIC
Avatar
PAT ELIMINATOR 70
  • MEMBER
  • 1 POST
Replaced master cylinder, proportion valve, front calipers, rear wheel cylinders and bled brakes (several times). I have checked the brake lines for leakage.
Jun 16, 2019 at 4:39 PM
Advertisement
Avatar
SCGRANTURISMO
  • CERTIFIED EXPERT
  • 4,897 POSTS
Hello,

You either have air in the brake lines or a leak that is allowing the brake fluid pressure to bleed off. I have included a link below for you to go to:

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

Please go through this guide and get back to us with what you are able to find out.

Thanks,
Alex
2CarPros
Jun 16, 2019 at 4:51 PM