Dead brake pedal

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Apr 22, 2007 | 04:53 PM

Dads79

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More Turbo

Joined: Feb 2004

Posts: 572

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From: Spring Hill, TN

Dead brake pedal

I'm working on a 78 F-150 that hasn't been on the road in two years. The brake pedal was very stiff. So today I changed the Master cylinder and bled the system. The pedal freed up a little and the brakes worked barely. The pedal is still soft and does not return to the up postion. When I bled the brakes very little fluid would come out with each cycle of the brake pedal on the down stroke. Whats next new brake booster ????? Thanks for your help.

Apr 22, 2007 | 05:56 PM

Torque1st

Posting Legend

Joined: Sep 2001

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It sounds like the MC was not bled properly. Also lubricate the brake pedal pivots.

Apr 22, 2007 | 06:03 PM

Mil1ion

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Joined: Jan 2008

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Likes: 24

I think you have seized calipers or wheel cylinders.

If these braking systems aren't used they seize up from lack of use.

Apr 22, 2007 | 10:17 PM

rusty7983

Laughing Gas

Joined: Feb 2007

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From: hohenwald, tn

hi, i had a ranger that the master cylinder leaked into the booster. the pedal would stay down. i eventually repaired it. there was a cup of brake fluid in the booster.