M3

M3 CHECK MASTER CYLINDER LEAK

- Disconnect the brake master cylinder connector tubes from the brake master cylinder.

- Plug the output ports using the appropriate size flared tube type plugs.

- Push down hard on the brake pedal.

- Does the brake pedal slowly move downward?

> Yes
Replace or repair the brake master cylinder as necessary. Master Cylinder, Brakes

> No
Hydraulic system check is OK.