1980 GL1100 Front Brakes Bled, Still Spongy
Original problem was brakes stay engaged after lever released. Calipers were sticking.
Completely disassembled both calipers, cleaned them up. For completeness I also replaced the master cylinder plunger, seals, washer and snap ring.
There are no leaks. The calipers no longer stick. I bled both calipers until no bubbles (probably flushed 3/4 of a quart of fluid).
But the brakes are still spongy as if there is air still.
If I clamp off either rubber brake line (left or right) one at a time the lever is firm and does not pump up at all.
But as long as both lines are unclamped the lever is spongy and pumps up, then when released immediately is soft and goes all the way down.
Any ideas what to try next?