1989 Chevy Suburban no brake pressure

Tiny
GSZAM
  • MEMBER
  • 1989 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 225,500 MILES
I have replaced my master cylinder, bleed the brakes. I have brake pressure with the engine off. When I do turn the engine on the brake pedal goes to the floor!

Why dont I have brake pressure with the engine on?
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Sunday, May 3rd, 2009 AT 9:41 PM

1 Reply

Tiny
DOCFIXIT
  • EXPERT
Try bleeding with engine running
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Monday, May 4th, 2009 AT 1:57 PM

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