I replace the flex hose I need to bleed the system

Hello,

Any time the brake system gets opened (i.e. changing caliper, master cylinder, brake hose/line), air will get into the system and will require bleeding the brakes to purge the air out.

Here is a helpful video of brake bleeding procedure:

https://youtu.be/w7gUsj2us0U

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

I have attached the instructions below.

Please let me know if you have any questions.
Thank you.