I'm Completely Stumped-!!
Ok Working on a friends 98 FLTRI (Road King). Duo Front brake,
cleaned out brake system,
New washers on banjo bolts,
Replaced the Caliper seals and inspected the pistons,
rebuild the Master,
Checked the rotors for warp-age (none),
Bled the brakes
Lever stiff (only about 1/8-1/4 inch movement before grab)
Master cylinder not showing that the fluid is flowing back into it.
The Calipers are releasing from rotor.
Double and triple checked to make sure all seals and rebuilt Master
where correct.
Anybody got any Ideas what it might be or had this problem. Before I tear it completely apart for a fourth time.

 

What about taking some fluid out of the res?

 

Res is wide opened, bleeding brake.

 

Let us know what happens. There are a few tricks for bleeding the front brakes I have discovered on here. Some people use a piece of string and tie the brake lever closed and leave the reservoir open all night for excess bubbles to escape. Just a thought.

 

Make sure all the orafices in the master cylinder are unobstructed. Are you reverse bleeding? You could have a vapor lock. Return spring correct length? I just bleed my rear brake wagner lockheed and the return was blocked causing the brake to lock up. Orafice was about the size of #60 drill bit, easy to miss.

Tie wrap the lever down with pressure on the handle over night will get any air out of the system, but it sounds like you have a return problem. Good luck, I know the stumped feeling.

 

I Found the problem. I Had to replace the Master Cylinder the inside walls were out of round(had a low spot on one side). wouldn't let the brake back bleed in to the cylinder. On duals bleed the brake that's furthest from the Master first, I Use a A brake bleeder and also do it manual(Old habits hard to ). Been Busy forgot to answer the thread , well stuff happens.
Thanks for the help