Brake fluid leak

Tiny
JR47
  • MEMBER
  • 1999 PONTIAC GRAND PRIX
  • 3.8L
  • V6
  • 2WD
  • AUTOMATIC
  • 283,841 MILES
Car still stops fine and have barely lost any fluid, but I've noticed a leak. I have a picture and I'm guessing it's time for a new master cylinder just looking to get another opinion about it first. Also noticed some fluid on top of the reservoir but none on the outside of the master cylinder.
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Tuesday, October 12th, 2021 AT 6:16 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

It appears to be sipping out. With any leaks if it gets left alone it will become worse overtime. Since it is a brake system leak, it can surely impact on safety. If a seal were to completely blow in the master cylinder, it will be difficult to stop the vehicle.

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

I have attached the master cylinder replacement procedure below. Also included the brake bleeding procedure.

Please let me know of any questions.
Thank you.
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Tuesday, October 12th, 2021 AT 6:48 PM

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