fuel gauge plays tricks on me?

ratking20

Petty Officer 2nd Class
Joined
Jul 20, 2010
Messages
193
92 sea ray 220 bowrider.

gauge reads full when tank is full
when its not full it reads half most of the time
when its almost empty, it still reads full but then
drops all the way down to empty right before i will run out of gas

do i need a new gas tank to fix the problem?
could it be the actual gauge? im guessing no
could it be the sensor/ or float whatever u would call it in the tank???
 
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