Hello, I am Danny.
Well, I can only think of two things. Maybe 1) When the person changed the brake pads they opened a bleeder valve or brake line and introduced air into the system, or 2) When the pistons in the calipers were returned to their retracted positions (new brakes installed) there might have been a wear spot in the master cylinder and fluid is leaking internally in the master cylinder bore or past a seal. Regardless it needs to be corrected because no brakes are dangerous! Hope this helps and feel free to ask any questions if needed. Thanks for using 2CarPros.
Monday, March 15th, 2021 AT 6:02 PM