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Home >> Pontiac >> 1966 >> GTO Eng CD WW, Not Available Trans >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brake Trouble Shooting >> Trouble Shooting Disc Brakes >> Low Pedal Or Excessive Travel

Low Pedal Or Excessive Travel

Fluid low. Improper brake fluid. Air in system. Hoses expand under pressure. Disc runout excessive. Wheel bearings or steering parts loose. Shoe and lining knockback after violent cornering or rough road travel. Improper rear brake adjustment. Distorted shoes or linings. Damaged caliper piston seal. Master cylinder or power unit malfunction. Metering valve (for front brakes) not working. Piston and shoe assembly misaligned. Caliper seals soft or swollen.