Question about 1994 Toyota 4Runner

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Replced front brake pads and calipers adjusted

Replaced front brake pads and calipers adjusted rear drums replaced master cylinder and no pressure build up to bleed brakes

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  • richter7340 Feb 23, 2009

    bench bleed master cylinder before installing and after about 3 hours of bleeding. even got a vacume pump to bleed the brakes.still no pressure.

  • richter7340 Feb 24, 2009

    this is the second new master cylinder installed to fix the no pressure. when i bench bleed the master cylinder i used a bleeder kit so i did not see how far it shot out, but pushed in and out about 15 times after no air bubbles were coming out.

  • buds95 Mar 29, 2009

    Im helping a friend work on his toyota. Ive never experienced a problem like this before. He had replaced the front brake calipers and after bleeding them had no pressure building up. I recommended that the master cylinder was possibly bad. After changing the master could not get any fluid to come out. Finally with a vacuum pump we were able to get some fluid out but still no pedal. Exchanged the master cylinder and tried again. Still nothing. Youll get fluid and no more air but the second you get into the vehicle and hit the pedal it goes to the floor.

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  • Toyota Master
  • 1,861 Answers

Bleed the master cylinder first. You have to do that before you belled any calipers or wheel cylinder.

Posted on Feb 22, 2009

  • Toyota Ed Feb 23, 2009

    What was the pressure when you bencjh bled? Did it squirt out about 2 feet? If not, you have a bad master cylinder.

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