Re-post: Fuel float trouble

[tcholdorf]

The fuel level shown on the Volvo Penta engine analyzer which comes from the mechanical float is incorrect. I have read that it is rare for the in-tank float to go bad. Can you advise whether we should change the float sending unit, and if so, the part number? Does it come with a new gasket? Or, if it’s an electrical issue from the sending unit to the engine analyzer, how do we troubleshoot that?

 

[American Flyer]

More information would be helpful. Year of boat? Model of boat? Is this a new problem or has it always been inaccurate?
The readout for the tank fuel level on the Volvo gauge is notoriously wrong on many of our boats. There are many existing threads on the problem along with many opinions of why it happens and how to fix it. After wasting time and money replacing the sending unit and attempting to recalibrate the gauge, mine is still way off from the actual quantity remaining. Like most others, I just use the Garmin calculated fuel level as it is extremely accurate.