# 98 Subaru Legacy Outback air in brake system

**URL:** <https://community.cartalk.com/t/98-subaru-legacy-outback-air-in-brake-system/64598>\
**Category:** Maintenance/Repairs\
**Created:** [May 11, 2011, 7:05pm UTC](https://community.cartalk.com/t/98-subaru-legacy-outback-air-in-brake-system/64598 "2011-05-11T19:05:31Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![robochacha](https://avatars.discourse-cdn.com/v4/letter/r/a183cd/32.png) [@robochacha](https://community.cartalk.com/u/robochacha)\
**Post date:** [May 11, 2011, 7:05pm UTC](https://community.cartalk.com/t/98-subaru-legacy-outback-air-in-brake-system/64598/1 "2011-05-11T19:05:31Z")

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I have an 1998 Subaru Outback Legacy. Recently brakes began to feel little soft so I decided to check whether there’s air in the system and there was. I could not get the brakes bled. No matter how long I tried there was always air in each single caliper. I replaced the master cylinder (albeit with a one from a junkyard) but the problem persists. There is no visible leaks along the line and there’s no leaking from the calipers. Is it possible, it’s a faulty brake booster?

Some things worth mentioning. When I press the brake bubbles come up in the brake fluid reservoir. Also, check engine light came on about the same time I started having problems.