Sound like maybe the bladder has burst in the tank and is covering the drain.
remove the fuel tank and drain the water
it should not be a water in oil tank it is mean engine cracked
Shut the water supply to it and drain it.
To drain a water tank to build pressure, first, turn off the power supply to the tank and close the inlet valve to prevent further water flow. Next, open the drain valve at the bottom of the tank to release the water, allowing it to empty partially or completely, depending on your needs. Once the desired level is reached, close the drain valve and reopen the inlet valve to refill the tank, which will help build pressure as the water heats up. Finally, restore power to the tank.
Bottom of the air tank. Used to drain the water in the bottom off the tank
The only way to know for sure if a person has water in the gas tank is to drain the tank. Usually a car will sputter and die if there is water in the tank.
Drain and clean the tank. Replace fuel filter.
It is probably best to drain and flush the tank.
You need to drain the tank.
If your hot water tank overflows, turn off the water supply to the tank immediately to prevent further flooding. Next, try to drain the excess water from the tank by opening the drain valve. Contact a professional plumber to inspect and repair the tank to prevent future overflows.
Unless the heater is relatively new, the drain is going to be slow and in some cases not work at all. Rust and sediment collect in the tank and plug the drain.
To drain a pressure tank effectively, follow these steps: Turn off the power to the pump. Open a faucet to release pressure in the tank. Locate the drain valve on the tank and attach a hose to it. Open the drain valve to allow water to flow out. Once the tank is empty, close the drain valve and remove the hose. Turn the power back on to the pump. By following these steps, you can effectively drain a pressure tank.