Float may be sticking or have a hole in it.
Yes
I need the information where to connect the Hydrogen Gas to the carburetor on what side
Having water in the gas tank will work its way up to the carburetor.
Gas is not getting into the carburetor because no Saturn made ever had one.
Yes, injected engines do not use a traditional carburetor. EFI gas engines do not have a carburetor, and diesel engines do not use a carburetor.
A carburetor regulates the flow of the air/gas mixture into the pistons of a gas engine. They aren't found on cars any longer but do still come into use for smaller gas engines.
no
Inside the carburetor, where the gas line connects.
More than likely it is a gas problem. Either the filter is clogged, the gas tank has something in the bottom clogging the outlet, you are out of gas, the carburetor is gummed up or if it is a riding mower it might be the solenoid on the bottom of the carburetor is not working properly. If you haven't used it in a while the chances are it is in the carburetor itself. You can verify it is a gas problem by spraying some carburetor cleaner into the carburetor while it is trying to die and see if it continues to run on the cleaner.
gas
under the gas tank
your float is stuck in the carburetor. Clean it with carb cleaner.