hard brake pedal
Thread Starter
Heel & Toe
Joined: Sep 2013
Posts: 24
Likes: 0
hard brake pedal
Question, brake pedal very hard did vacuum check on booster at 18 you could watch the vacuum drop to 12 and then it would very slowly drop from there. What vacuum should the booster hold and for how long? Also brake fluid is very dark. Could there also be a problem with the ABS?
Thanks Tom Slick 88
Thanks Tom Slick 88
Melting Slicks
Joined: Jan 2002
Posts: 2,531
Likes: 35
From: Lecanto Florida
Sounds like it's time for a new brake booster. Replaced two on my 87 so far...and I do mean "new". More $$$'s than a re-built unit but it should last the rest of the cars life and you won't have to replace it again.
Last edited by CREWZIN; Nov 11, 2013 at 08:29 PM.
Le Mans Master
Joined: Sep 2013
Posts: 6,192
Likes: 750
From: near the thumb in the mitten
booster hose should have a large volume of vacuum ie...engine should stall or nearly stall if disconnected. May even whistle. If it doesn't port is restricted carbon build up, hose, or check valve. Either way it sounds like brake fluid needs flushed....dark/black fluid can hurt ABS.
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