No brake preasure

Tiny
BENJI FORELLA
  • MEMBER
  • 1994 TOYOTA COROLLA
  • 1.6L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 325,000 MILES
I had both rear brake cylinders go out. When I replaced them I went ahead and replaced the brake pads and shoes on front and rear as well as installed new drums in rear, and in doing so I noticed the right rear and left front brakes had not been applying, after replacing all mentioned parts. I went to bleed the system the right front and left rear had great pressure and the left front and right rear had very little. I drove the car for a week and re-bleed system and still same issue. Almost no fluid pressure at left front and right rear and they and neither left front or right rear are applying. The right front and left rear work great. Any advice?
Sunday, December 4th, 2016 AT 5:38 AM

4 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
You allowed the master to go dry which you should not have done. You also made the master travel much deeper in the bore than it has been causing the seals to get damaged in the process. At this point you probably need a new master cylinder.
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Sunday, December 4th, 2016 AT 8:20 AM
Tiny
BENJI FORELLA
  • MEMBER
  • 2 POSTS
Thank you guys for the help I will start with the master cylinder.
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Sunday, December 4th, 2016 AT 9:49 AM
Tiny
BENJI FORELLA
  • MEMBER
  • 2 POSTS
My car is not equipped with ABS by the way. I had considered that already but unfortunately it is not equipped.
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Sunday, December 4th, 2016 AT 10:10 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
You have a diagonal system and you have lost one side of the master.
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Sunday, December 4th, 2016 AT 10:13 AM

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