Brake pedal goes down to the floor before stopping the vehicle

1970 MERCURY COUGAR
78,000 MILES • 5.8L • V8 • 2WD • AUTOMATIC
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PAT ELIMINATOR 70
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  • 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
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SCGRANTURISMO
  • CAR REPAIR CONTRIBUTOR
  • 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
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