Carb question

[intofx]

So I'm having them move the filter in the rear to the front as suggested here. In the process they put a vacuum gauge on the line as they thought this could also be a tank or sender issue. They said they think this could be an issue in the gas tank as they were getting vacuum on the line as if the sender gets clogged? They are thinking there may be something in the tank causing issues? I have had a recurring problem where the fuel gauge reads empty and when I go to fill up the 18 gallon tank, it only takes 9 gallons.



Thanks again for the suggestions.

Thanks,
Matt