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1976 Chevy Monte Carlo BRAKE PEDAL GOES TO FLOOR WHEN ENGIN

Tiny
MKCKEITH
  • MEMBER
  • 1976 CHEVROLET MONTE CARLO
  • V8
  • 2WD
  • AUTOMATIC
  • 15,000 MILES
I HAVE CHANGED OUT MASTER CYLINDER AND POWER BOSTER ALONG WITH A CUT LINE. I HAVE BLEED THE BRAKES STARTING AT MASTER CYLINDER AND THEN LT REAR, RT REAR, FRONT LT, FRONT RT (DIRECTION GIVEN FROM FRONT OF CAR). I HAVE FIRM BRAKE UNTIL I START THE CAR. WHAT DO YOU SUGGEST. ALSO HAVE CHECKED THE VACUM GOING INTO THE POWER BOOSTER AND IS WORKING FINE.
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Sunday, June 28th, 2009 AT 9:07 AM

3 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Sounds like you still have air in the line, especially to the rear, I used to have someone pumpm the pedal gently, as I held a finger over the open bleeder at the right rear(passenger) side, then bleed all 4 again. DO NOT let the master go dry during bleeding! You also might need a third person to hold the button on the combination valve, thats where the line to the rear attaches. You did bench bleed the master first right?
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Sunday, June 28th, 2009 AT 9:12 AM
Tiny
MKCKEITH
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  • 2 POSTS
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Sunday, June 28th, 2009 AT 9:19 AM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Might try cracking those lines to check for air there too.
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Sunday, June 28th, 2009 AT 9:55 AM

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