After replacing the Master cylinder brake pedal still goes to the floor

Tiny
GARY JACQUARD
  • MEMBER
  • 1980 CHEVROLET CAMARO
  • 2.9L
  • V8
  • 2WD
  • AUTOMATIC
  • 78,000 MILES
Is it normal to see the master cylinder and power booster move a bit when braking? Just got new master cylinder and calipers installed. Brakes improved but not by much, pedal will still go to the floor before stopping
Monday, May 4th, 2020 AT 8:36 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

Did you bleed the system? It sounds like you have air in the system. I would pressure bleed the system as there may be air trapped in the lines.

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

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

Yes, it is not abnormal for the firewall to flex a little when applying the brakes.

Roy
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Monday, May 4th, 2020 AT 9:55 AM

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