1 mechanical issue there is a hissing

1997 ACURA RL
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BIGDOGSZUKI8564
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I bought this car with one mechanical issue. there is a hissing coming from under the dash when I hit the brakes?
Jun 18, 2008 at 2:13 AM
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KASEKENNY
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This is most likely the brake booster so I would recommend replacing it and that appears to come as an assembly with the master cylinder.

This means you are going to have to replace this and then bleed the brakes. So here is a guide that will help with this:

https://www.2carpros.com/articles/how-to-replace-a-brake-master-cylinder

https://www.2carpros.com/articles/how-to-bleed-or-flush-a-car-brake-system

Below is the process from the manual that will give the detail as well.

Please let us know if you have other questions. Thanks
May 17, 2021 at 7:29 PM