Drain and clean the tank. Replace fuel filter.
Remove the tank from the car.
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.
Yes
it will feel as if you are running out of gas, the car will start sputtering.
Could be water.
damage engine no.. will the engine run no.
Pour 5 gallons into the tank of your fathers car, and you will find out.
water in gas tank
Depends on capacity of tank but not much. It is heavier than gas and will go to bottom where pick up is
Into the gas tank.
It might cause your car to stall depending on how much was put in.
Sugar sits on the bottom of the tank like sand unless you have some water in the tank also.