Brakes! Help!!!

OK really frustrated now. Here is the situation today.
Left it overnight to see if gravity would do the trick.
Gave it a pump this morning and a few micro bubbles but still no pressure.
I have a small flow of oil on the nipple when I bleed but no pressure.
I looked at the oil level when I pump and I do get a half inch high fountain coming out of the small hole when the lever is released. (??)
In desperation took off the right calliper to see what's doing when the lever is pulled.
I get a jutting out of the piston with each pull on the lever but no return.
I can manually push the piston back with some effort.
I don't think there can be any air in there now, surely.
I did notice 4 rubber seals in the calliper rebuild kit. Should they go somewhere??

HELP MEEEEEEE.....

KEL wrote:

RickG wrote: You are on the right track there Kel, all you can do is tie the lever against the bar for at least 4 hours and that helps the air rise to the MC and when you release the lever the air goes into the MC and gently pull the lever and that air should come out.
When you start to get some pressure pump it till you get max pressure and tie the lever in.
Make sure the MC piston is returning far enough to let it get more fluid when it needs it

OK. Rick, back to the original plan then. Re clamped the lever to the bar. Will leave this overnight with a full Master Cylinder.
Lets see what happens.
Gee this has never been that difficult with any other bikes I've owned..

The Z13s brakes can be very stubborn things to bleed I have had problems with mine every time and now use a vacuum bleeder that I made from a peanut butter jar, plastic tubing and a vacuum pump from an EA Falcon that had died and I was using for spares.
I also use it on my K1100 BMW which believe it or not can be worse.

2 small holes in the lid that the plastic tube will squeeze through so it seals fairly well the tube from the caliper goes through the hole and right to the bottom of the jar and the other line through the hole about 1" and the other end to the vacuum pump.
Hook the pump to a battery and let it run and the vac draws the fluid through.
One other method is using a big syringe (100ml) you can get from a Vet and draw the fluid through with it.

I am all over the syringe thing now Rick.
Trying to pull air out slooooowly...
But when I push good oil back up its not bubbling as i would expect.
Just hoping that the air i'm puling out is coming from the system
I've never had this before this bad..ever.......
Back into the shed I go.

Sometimes you can get some air trapped in the banjo fittings, usually at the master cylinder outlet. Pull some pressure on the lever and crack the fitting with a bit of rag under it of course.
The early 1500 Gold Wings were really bad for it.
I have never had to do this but I know a few who have done it and it is pushing fluid back up with the syringe and not pulling at all just a fresh syringe each time. Don't let it over flow though.
Many years ago I has a Mark 2 Ford Zephyr and to bleed the brakes I had to put a tube from the wheel cylinder back to the MC and sit in the car and pump the pedal while reading a book and eventually it would come good.

well after 2 days and 4 hours i have effectively given up...
must have pumped two bottles of fluid thru the system without any joy.
even replaced the crush washers on the calliper banjos just in case but no good.
when i reverse bleed with a syringe full of fluid on the bleed nippple i can get a good little fountain flow in the master cylinder and can even refill the master cylinder without any bubbles appearing.
when i pump the lever with the syringe attached to an open bleeder it moves the plunger of the syringe.
there are no leaks anywhere. new seals, new master kit, new everything..

I am using fresh DOT 4 Fluid.

what could it be???
am i missing something?

Just out of curiosity, you have fixed the washers in the master the correct way right? i.e.: lip face..
Close one side completely and try one calliper, have you tried that already?