austin944

Do your rubber brake lines have any curves in them, that might allow air to become
trapped at the high points? I wonder if the power bleeder alone generates enough
pressure to force air bubbles out of any high points in the brake lines.

I noticed that when using the power bleeder, air would get trapped in the high point of the
clear hose connecting the pressure tank to the brake fluid reservoir. This air isn't entering the
system of course, but if you think of this hose as modeling a brake line with a high point, then
it seems possible that air could get trapped in the brake line.

On other cars I've used the power bleeder with different fluid, and have not seen this trapped
air in the clear hose.

mjmoran

That could be possible. Maybe with the added force of the manuel bleeding on top of the pressure, I eliminlated any trapped bubbles. Kind of like drano in a pee trap!

jet911

Great Michael,

I'll give it a try when I do my annual maint. this winter.

Thanks!