Join Date: Oct 2006
Location: Green Bay, Wisconsin, USA
Make: GL1500 SE
What you are experiencing is so common. The problem is the master cylinder needs to be the highest spot. It is not. The banjo fitting is and the air gets trapped there with no way out. Put the bike on the center stand and even lean it to the right as much as you can safely. Now turn the handlebars to the far right and bleed as normal. Now the master is the highest point and it will work for you. Good luck.
Worked on the "big rigs" for 45 years now just riding my Wing whenever I can. Gets cold in Wisconsin.