Would engine be running to blead grakes?

No, the engine does not need to be running to bleed the brakes. Bleeding brakes involves using the brake pedal to push fluid through the system, and this can be done with the engine off. However, some vehicles may have brake systems that are easier to bleed with the engine running, particularly those equipped with anti-lock braking systems (ABS), which may require specific procedures. Always refer to the vehicle's service manual for guidance.