Steve350Z28

I recently purchased a 91 1LE Camaro. with 60K on the odometer.

The brake performance was very bad from the start.

The brake fluid was black as night.

I replaced the master cylinder and bled all the brake lines using a kit that I hooked up to my air compressor.

I bench bled the master cylinder before installing it on the car.

I did this once before on my first car, an 84 Z28... in 1996.

I stopped bleeding it when I stopped seeing air bubbles.

What I did see however and was unsure if it is correct is fluid squirting out of the front most reservoir when pressing in the piston.

This fluid is still squirting out of the front reservoir with the Master Cylinder installed on the car (to expect anything else would be silly, I know).

Is this a sign of a bad Master Cylinder?

The calipers are getting piston pressure but there's not a lot of stopping power.

Thanks.

Z28SORR

Yes this is normal. Push slower.
When you bled the master cylinder did you get all the air out of BOTH the front and rear reservoir? The front is fairly easy but you have to push very hard to activate the rear half.
At this point with it installed I would re-bleed the system. Pedal should be hard with only an inch or two of movement.

Steve350Z28

It only requires me tapping the pedal for that to occur.

I did get all the air out of both halves.

I bled the entire system after I installed the master cylinder.

I have a question regarding the caliper pin on the 1LE dual piston calipers: Should it be lubricated?

Thanks.

Z28SORR

I've always put a little dab of grease on the end of the pin where it contacts the piston. Never seen anything that says it's required.