Squishy wet bubbly sound from master cylinder

[Shorts]

I think I am going to go find a little pump can or something. Being here, I cannot easily find small parts and tools (no real auto parts stores that stock), everything must be ordered. But, I know where there are oil cans with the pump handle and I'll try that way. If I don't get this done, no one will. So, onward.

My 8mm wrench paid the price last night for my incompetance and frustration, but being a Craftsman, it hung in there and bounced right back off the wall

[Shorts]

As stubborn as I am, I decided to try old school method again (pump, hold, bleed, close, release...pump etc). DH helped me out with the lever.

We got some feel back in the lever so - yay progress!

There's good pressure back in the lever, but the last 'pump' we got a good mist of bubbles into the tube fluid. So, we called it quits to let it sit overnight and we'll do another finishing run through tomorrow. Knock on wood the brakes will be done.

Thanks for the encouragement folks.

[oldschoolorange]

if you still have the problem you may have to rebuild the master cylinder as your cup seal could be ripped

[sharpmagna]

if you still have the problem you may have to rebuild the master cylinder as your cup seal could be ripped

Yeah it sounds like air is getting into the lines somehow.

Also, I've never experienced it myself but I've read that air can also get in through the bleeder screw. Just in case, remove the bleeder screw and wrap some teflon tape around the threads. Hope you get it solved.

[Shorts]

Well the brakes are good to go. We did a few more bleed pumps the next day to be certain it was holding. Sure enough, it was ready.

No leaks in the lines and during the 'push the bike test the brakes' it stopped on a dime. I think I underestimated the process and just wasn't giving it the swift finishing treatment like it needed.

I do think I may rebuild the MC, maybe for next season or so. The little rubber seal on the outside there looks like a dog chewed on it.