Hey go to the floor and no obvious leaks?

Tiny
JEFF CHURCHMAN
  • MEMBER
  • 2004 CHEVROLET BLAZER
  • 4.3L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 157,000 MILES
I replaced front disc pads and bled them to hard pressure. Thought it was done but later they go to the floor and no obvious leaks. I need a list of probable causes and there individual repairs. I suppose I should look at the back before deciding!
Hopefully somebody is to help me today. Thank you in advance.
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Sunday, March 1st, 2020 AT 6:25 AM

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Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
If you have a pedal that goes to the floor then you are correct to look for leaks. Basically it is one of two things, either a leak (internally or externally ) or there is air in the lines as air will compress and fluid will not.

Here is a guide that covers this. However, I also attached the process on bleeding them manually, just make sure this is how you did it or if you can pick out something that was missed that may have caused this.

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

Worst case scenario you have an internal leak with the master cylinder but if all you did was change the brakes and bleed them, I suspect you have air still in the lines.

Let me know if you have questions. Thanks
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Sunday, March 1st, 2020 AT 2:28 PM

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