i pulled my tank out today
it had rust around where the circle bracket holds sender in my neighbour said clean that so it gets good earth
he also checked the sender and it works half way with ohm meter and the rest didnt work im guessing top half
he gave the tiny wires that toch on the moving part a clean with fine sand paper then worked all the way through
im gonna fill up tomorrow and see if it works

is this what usualy goes wrong???

whats the normal things that go wrong with the guage not working