I'm having a crazy time bleeding my brake system. When I use my bowl and vacuum hand pump, I initially got some fluid and since then all I get is air with the odd drop of fluid.

The right rear bled OK initially but when I read that I should do the left rear first, I began again from the left rear. It bleed OK but then the right rear gave some fluid and just as I thought I was in good shape, it started sending air bubbles. The air bubbles got more and more until there was the only the odd drop of fluid poking through. What's more, the reservoir doesn't seem to be going down.

My problem is that I can't find the leak. When I pump the peddle, the fluid doesn't leak out anywhere that I can see. It also doesn't go down much. All the bleed screws are tight.

I had one of the calipers disconnected from the system but I put new copper washers on it and made sure it was perfectly clean when I reconnected it.

The lines all look dry except a the one that was disconnected. It's still a little wet from the fluid that came out of the system when I removed the caliper.

I'm getting so much air that I would think that I ought to be able to find the bad caliper by pumping the brakes and looking for fluid but that doesn't seem to be working. I only pumped the brakes for about 10 minutes, though.

I'd be grateful if someone would give me some direction on how to debug this system. I'm completely at a loss.


Thanks,

Tom Brown