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68gmsee · 08-23-2007, 10:31 AM

If you are sure the master cylinder and brakes have been bled properly, and there is not excessive play on the brake pedal push rod, then more than likely you have a bad master cylinder.

The vacuum booster only assists you. It shouldn't cause the brake pedal to go down to the floor.

08-23-2007, 10:31 AM	#6
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Please can someone help me im completely lost If you are sure the master cylinder and brakes have been bled properly, and there is not excessive play on the brake pedal push rod, then more than likely you have a bad master cylinder. The vacuum booster only assists you. It shouldn't cause the brake pedal to go down to the floor.