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excessive brake travel after new engine put in......what's going on??? 200 1987

uid 17340's pic
posted by  Nickvjr on  Mon Dec 1 20:35 CST 2003
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last visit: Thu Sep 4 11:15 CST 2014
[RELATED]

Sounds like the Brake Master Cylinder is going. The way to check a master cylinder is to turn the car on and without the car in gear and the parking brake on LIGHTLY press down on the brake. Barely depress the pedal. If the Master Cylinder is gone the pedal will slowly start to sink to the floor until it bottoms out. If you pump the brakes the pedal will get firm again. If you press the brake hard the pedal will bite everytime. It is only when you lightly press on the brake that you canm really tell if the master cylinder is going. I have used this method on 10's of master cylinder changes with great results. I don't see any connection with the engine and the brakes other than the vacuum applied to the brkae booster. Other than that the systems are independent of each other as far as I can tell. Good Luck!

Sincerely,

Nickvjr
1979 264GL 120,600






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