Piston stuck on slave cylinder

what piston
cylinder piston, clutch slave cylinder piston, brake master cylinder piston
not enough details for an answer

The Clutch Master Cylinder or the Clutch Slave Cylinder has a leak. From under the dashboard, located the Clutch Master Cyliner Boot and pry one side open. If hydraulic fluid drips out, the piston seal(s) in the cylinder are worn. You'll need to replace the cylinder.

it shounds as though your master cylinder might not be pumping any fluid.

when bleeding did you press pedal really softly at every press or did you press it as if changing gear ? if as changing gear i expect you have pushed the cylinder piston past the end stop , you will have to dismantle cylinder and manually pull the piston back and make sure the seal is on the end , if not it will be stuck up the cylinder , carefully pry out and refit to piston , put a tiny amount of vaseline around the seal before reassembly and bleed again but press pedal very slowly , keep me posted if you wish

No ---it simply needs the air being bled out of the clutch system. IF the slave cylinder had no fluid leakage past the piston then have an assistant help you bleed the slave cylinder. If there is a problem then I would consider replacing the clutch master cylinder .Keep an eye on the clutch master cylinder reservoir . The play you gave in the clutch fork is not there when the system is bled properly and there is no spring as the system keeps the piston of the slave cylinder in contact with the forks.

The slave cylinder needs to be replaced as well.

I have always found the slave bleeding instructions inadequate. The way they design the slave with the bleeder away from the piston makes the standard bleeding ineffective. Unbolt the slave and put a wrench on the bleeder nut. Hold the slave in your left hand with your thumb over the pusher. Open the bleeder with your right hand and push the piston into the slave. Close the bleeder, release the piston, and repeat until air is out. This is essentially a bench bleed on the car.

Try taking the cap off of the master cylinder. This will allow the fluid from the system to move back up the line and the piston to depress.

you may have a faulty clutch master cylinder or faulty clutch slave cylinder- leaking clutch fluid. most of the time both are replaced at the same time which should be recomended by your mechanic, the bolts to the master cylinder are very hard to get to and require the right tool.
you should be able to move car forward by selecting 1st then cranking engine till it starts, gear changes while driving are hard but not impossible. i recommend a tow truck to a local repairer.

You should be able to buy a rebuild kit for the cylinder, I would rebuild the slave and master. just take it off, take the snap ring off and remove the piston, make a note of which direction its facing, the new one may come with a piston with the seal aready installed.The cup will have the flare facing forward. Just put the new seal on/ or piston in and reseat the snap ring. The slave is just as easy. then you want to bleed all the air out. Fill master cylinder and open the slave bleeder screw, just let fluid come out until all the air bubbles quit. that should bleed it. If the pedal dosent feel right, you may need to have another person depress the pedal and then open the bleeder.