Econoline E150 1/2 Ton V6-4.2L VIN 2 (1998)
Brake Master Cylinder: Testing and Inspection
Functional Test
1. Disconnect the brake lines at the brake master cylinder.
2. Plug the outlet ports of the brake master cylinder.
3. Apply the brakes. If brake pedal height cannot be maintained, the brake master cylinder has an internal leak and must be rebuilt or replaced.
