[honcho]

need some help my gas guage jumps around from full to half or three
quarters of a tank it evens does it on the trailer so it is not
motion not sure if it is the guage or the sending unit, i can tell
how much gas i have on the high jump it drives me crazy and
just want to repair it.it is on a 22 ft grady 225yamaha
thanks for any help

 

[Captain Dave]

Could be a loose connection or faulty gauge.. Try this ? in the Boating section..