2000 Chevy Blazer no brakes

RANGERDANGER17

MEMBER
2000 CHEVROLET BLAZER
6 CYL
4WD
AUTOMATIC
10,400 MILES

We have replaced the rear calipers and the master cylinder but the brake pedal still dont work we have bleed a gallon of fluid through the system

what is wrong with it is it a bad master cylinder again or the front calipers

Sunday, December 28th, 2008 AT 10:31 AM

7 Replies

JACOBANDNICKOLAS

MECHANIC
108,170 POSTS

Hi:
Does the pedal go to the floor? When you replaced the master cylender, was the pushrod adjustable?

Let me know.
Joe

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Friday, March 19th, 2021 AT 11:57 AM

RANGERDANGER17

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224 POSTS

It goes almost to the floor and stops then the brakes stop and I goes the rest of the way to the floor

i dont think it is adjustable cause but I dont think that the problem

but some how air keeps getting in the system cause we bleed them and we get all the air out then we come back and there is still alittle air in the system

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Friday, March 19th, 2021 AT 11:57 AM

JACOBANDNICKOLAS

MECHANIC
108,170 POSTS

Hi:
Can you pump the pedal to get a normal pedal? If so, does it then slowly go to the floor? If so, I would say you have a bad master cylender again. If you can pump it up and then it slowly goes to the floor, something is bypassing in the master cylender allowing the fluid to get past the piston.

Let me know if this sounds like your problem.

Joe

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Friday, March 19th, 2021 AT 11:57 AM

RANGERDANGER17

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No pumping it does nothing I think I figured it out

its either the front calipers or air in master clyinder that I didnt get out when I bench bled it so I going to try that but thank for the help

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Friday, March 19th, 2021 AT 11:57 AM

JACOBANDNICKOLAS

MECHANIC
108,170 POSTS

Are the front calipers leaking fluid? Also, if you ran a gallon of fluid through the system, I would think you got the air out of the master cylender. Regardless, let me know what happens. Check the rubber brake hoses to make sure they aren't expanding when you hit the brakes.

Joe