Brake System Problem/Question

[silvergsx623]

On my 89 T when I lightly apply the brakes the brake pedal sinks down part way appling the brakes about 1/3 power. It will stick down and slowly rise up (takes about 2 seconds after my foot is moved off of it). My brake fluid is not low.

What could be causing it to automaticaly apply the brakes, once the brake petal is touched, and sticking down. Is that a master cyl. prolem?

Thanks
Chris

 

[Nick M]

An internal leak, meaning fluid is moving around the piston, making the pedal easily sink.

 

[silvergsx623]

cool, So replacing the master cyl. will fix it?

Thanks Nick M

 

[BlackMKIII]

Had the same problem with my 86.5. Put in a new Aisan master cylinder and it's worked perfectly since.