The bleeder is opened at a caliper and no brake fluid flows out. Technician A says that this is normal and that brake fluid should not flow or drip out of an open bleeder valve. Technician B says that the vent port in the master cylinder may be blocked. Which technician is correct?

Question

Quizplus · Accepted Answer

When the bleeder valve on a caliper is opened, brake fluid should flow out if the system is pressurized and functioning correctly. Technician B's suggestion that the vent port in the master cylinder may be blocked is a plausible reason for no fluid flow, indicating a problem in the brake system.

The Bleeder Is Opened at a Caliper and No Brake