brake problem

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Jul 16, 2011 | 06:00 PM

hmosefski

Thread Starter

3rd Gear

Joined: Jul 2011

Posts: 3

Likes: 0

brake problem

just replaced a brake line in a 1977 with disc brakes . Bleed all four wheels in recomended sequence lr,rr,lf rf,due to the car sittig with no brake fluid in the system,because it had a leak thru the previous months while it sat idol.My question is, why can't I build any pressure to get a good pedal.I bleed each wheel a number of times ,I don't see any leaks, and the pedal still goes to the floor. What am I missing?

Jul 16, 2011 | 08:12 PM

68sbcoupe

Instructor

Joined: Jun 2011

Posts: 183

Likes: 1

From: Litchfield CT

probably air in the master. try bench bleeding it, then gravity bleed the calipers.

Jul 16, 2011 | 09:34 PM

dgood

Burning Brakes

Joined: Apr 2009

Posts: 807

Likes: 2

From: VIRGINIA BEACH VIRGINIA

Concur with 68. Tried the pressure bleeding route and could never get it. Bench bled the master cylinder and then gravity bled the calipers over a long day.

Jul 16, 2011 | 10:04 PM

Phlash

Racer

Joined: Oct 2001

Posts: 274

Likes: 2

From: Pampa Tx

Though you probably did this, I will ask anyway. Did you bleed both sides of the calipers on each rear brake? Did you lightly rap the caliper bodies with a small hammer to help move any trapped bubbles inside the calipers while you are bleeding the calpers?