Oldsmobile Workshop Service and Repair Manuals > Ciera V6-173 2.8L VIN W FI (1986) > Brakes and Traction Control | Power Brake Assist | Vacuum Brake Booster | Component Information | Description and Operation

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Vacuum Brake Booster: Testing and Inspection

Hard Pedal

1. Internal Vacuum Leak.
2. Faulty Control Valve.

Brakes Grab

1. Faulty Control Valve.

Slow or No Release

1. Faulty pushrod adjustment.
2. Bind in linkage.

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