Just a guess. While you cleaned the debris off the calipers, you may have debris, very tiny particles, within the system.
Master brake cylinder brake fluid clear? free of debris? There's a tiny hole in the cylinder. make sure it's clear by pumping the brake handle you can see the piston in the hole moving back and forth.
Brake lines? Could be the source of contamination. They could be breaking down.
Calipers--- there small port which may be getting clogged on the inside of the caliper. Small particles may be floating around causing your problem.
Rebuild kits are around 20 x 2. I'd only blow out the calipers if I were going to rebuild them. Just my process and may not be yours or others.
I would bleed the crap out of your brakes first. They have bleeding kits that will suck the fluid through the system through your calipers and into a container. You put 10psi or less of suction in the system (the tool has a gauge) while pouring fluid in the master brake cylinder. It it doesn't work, fluid doesn't flow through the system and come out clean, I'd say you have something clogged. Rebuild the calipers and reattach. If the brake lines are bad I don't know how you would trouble shoot that and not just feel they may need to be replaced with a Caliper rebuild.
there may be something I'm leaving out (disclaimer) someone may have a better idea I'm sure. Good luck!
2008 Vulcan 900 Classic LT
HID lighting 35 Watt White
Chrome Slotted oval Mirrors
Chilhowee Tank Bra
Barons Big Air Kit
Vance & Hines Twin Slash staggered
EJK Gen 3 Electronic Jet Kit
1991 Vulcan 750
Spiegler brake lines
rebuilt calipers, master brake cylinder
Last edited by Mike DeAngelo; 05-23-2015 at 11:55 AM.