Brake pedal goes to the floor?

1974 DODGE TRUCK
64,000 MILES • 6 CYL • 2WD • AUTOMATIC
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SHLBTWD
  • MEMBER
  • 34 POSTS
Pedal goes straight to the floor with no pressure at all. It has been sitting for 20 years. I'm not a mechanic please help.
Oct 2, 2022 at 12:02 AM
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STRAILER
  • CAR REPAIR CONTRIBUTOR
  • 54,193 POSTS
Please check the brake fluid first, if it is okay, I would start by changing out the brake master cylinder.

Here are two guides that should help us fix the problem:

https://www.2carpros.com/articles/how-to-replace-a-brake-master-cylinder

and

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

Please go over these guides and report back.
Oct 3, 2022 at 10:33 AM
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