KD4315

I'm trying to bleed my brakes but I keep getting this steady stream of bubbles after about 30 seconds of solid fluid. I don't think it's coming around the edges of the tube from the outside because I have a good amount of grease around the nipple. Any ideas?

EZEARL

What's your bleeding procedure?

Bustedback

Why are you bleeding the brakes?

KD4315

I'm using a motive power bleeder hooked up to the master cylinder with 10psi.
I'm bleeding them because I was due for a brake change. One of my calipers was sticking. The fluid was black and I haven't change the break fluid in the 3 years I owned the jeep.

diskman

Keep bleedin! I ran a few bottles through my XJ system before the bubbles were gone. Especially if you replaced hardware.

KD4315

I've ran 5 bottles of fluid through them already.
This is only happening in the rear where I didn't replace anything.

KD4315

The weird thing is I can set a watch by the bubbles. I get exactly 30-32 seconds of solid fluid then a massive rush of bubbles.

Bustedback

How does the pedal feel?

KD4315

Starts good but gets softer the more I push it.

KD4315

I decided to bleed the old fashioned way but now I get this sound whenever the brakes are applied with the car off. It sounds like air is escaping from somewhere. The hose from the manifold to the booster is brand new as well as the booster grommet.

cerami50

You could also be pulling air in along the bleeder valve threads and then back out through the port. Happened to me on most of my brakes when bleeding with a vacuum pump.

KD4315

That's what I thought at first. I caked the nipple with grease and that noise in the second video is just pumping the brakes with the car off.

Turbo X_J

When you replaced the caliper did you allow the master cylinder reservior to run dry? If so removing and bench bleeding the master cylinder is the only way to make it right. In your video when the air enters the hose why did you close the bleeder? Leave it open until the air clears.

KD4315

I'm not sure what you mean The bleeder was closed when I filmed this. The video is just pumping the brakes with the car off and the bleeder closed.

Turbo X_J