You are going to have to open it up to find out where the leak is. It sounds like the fill meter hose has come off. How you get into the machine depends on what brand it is, so you might want to post another question to ask "how do I open the cabinet of a XXXXXX washer?"
Once open, you should see a thin hose coming from the side of the tub to a small meter in the control panel. This detects how much water is in the tub and turns it off depending on what setting you choose. If the hose comes off, the water leaks out as it fills, and the machine never thinks the tub is full so it never stops filling.
My first guess is a seal if the machine is old.Second guess is a line has come disconnected.Either way,you had better turn everything off and clean up the water ASAP because water damage is probably more costly than a washer.If its old and no hoses are disconnected,it may pay to just buy a new machine.If its fairly new,check your warranty and call a plumber.
Most probably its the pipe that is connected to the waste pump of your washer, or it could be the pump itself that is creating the problem. In that case its just the matter of reattaching he pipe back tightly with the pump and that will fix the problem. Another very unlikely problem could be drum leakage but that is very unlikely to happen! Just a quick look inside the machine will tell you where there is the problem.
On most occasions no matter what brand, just about all washers have pumps and hoses that are located beneath the machine. Kenmore and Whirlpool top loaders have a pump that is plastic and is located on the motor shaft. They are durable to a point. GE and Maytag have motor pumps which are located the back right corner. Usually if they leak its towards the back of the machine.
I had this problem. There is a tube that connects to the back of the switch for setting the level. It became disconnected, maybe through vibration? You will see a little plastic connector on the backside of the level set switch. Reconnect the hose there if its disconnected or it may have come off on the other side of the tube where it connects to the tank.
It leaks when throwing water out
Sis just had same problem and she said drum rusted and leakes she had to replace it. Good luck.
Brand new machine water gushing out underneath all pipe connected
I would call a repair man.
I have a front loading washing machine. I kept leaking water out of the bottom of the door and it took 3 repairmen and 3 different trips to realize I had a 5 inch tear in the gasket caused from a pair of tweezers.