Yes, it is possible to put too much water in a pressure cooker. Pressure cookers work by trapping steam generated from boiling water inside a sealed pot, which increases the pressure and raises the boiling point of the water. This allows for faster cooking times.
However, if you fill the pressure cooker with too much water, there may not be enough space for steam to form and build pressure properly. This can lead to problems with the cooking process and may prevent the pressure cooker from reaching the desired pressure.
To avoid this, it's important to follow the manufacturer's instructions and guidelines for your specific pressure cooker model. Typically, pressure cookers have a maximum fill line marked inside the pot, indicating the maximum amount of liquid you should add. It is generally recommended to fill the pressure cooker no more than two-thirds full to allow enough space for steam to build and create the necessary pressure.