HELP! No pressure on brake lever after removing banjo bolt

[Rijko]

I like new stuff, but rebuild kits are usually incomplete, wrong size and expensive.
Since you had pressure before, i'd guess there's still air trapped.

I had something like that and used 8 or 10 banjo rings to screw the banjo in the MC.
That way i could test the MC itself, without having to think about air in the calipers or lines.

Turned out there was air trapped in the MC ...

[dartagnanphd]

Appreciate that perspective! I kinda felt the same way about rebuild kits, they can be a shot in the dark

[salty_monk]

I would swap to a more modern master cylinder from another bike before I rebuilt a stock one personally.... Hit and miss for sure.

[dartagnanphd]

For posterity-

Due to a strange and fortuitous series of events, this problem has been solved.
The other night, a very intense rainstorm hit my town and in the night the GS650G was blown over. I put it back up on its side, and luckily nothing broke or was damaged. Later that day, I took a wrench and tapped the lines with the MC open, and the lever had pressure. I'm not sure if I would recommend this method of getting air out of your lines, but it was undoubtedly effective!

Thanks to everyone who responded, your advice is much appreciated!

[rphillips]

Glad it's worked out, but obviously makes no sense... It may would work for others, but when another thread comes up about trouble, bleeding brakes, Like you, I don't think I could recommend this method... It's sure been aggravating, Glad all is good.