Fuel Gauge

[champ]

The fuel guage is on 1/2 full, but I just filled it up. Is there an easy way to recalibrate the sending unit?

Thanks

[stevehudack]

How old is the boat...The old cork sending units tend to get saturated and wont float anymore. That may be your problem.

[Capt. Debbie]

Problem can be in three spots. #1 the sending unit is not free swinging and traveling vertical ( as suggested) and the resistor that varies with it is not changing.

#2 a bad connection. It's low voltage and a bad connection can consume some of your signal. That would still track on the guage up and down. But would not go full scale up.

#3 a bad guage. Likely a mechanical failure within the guage itself. That's what the piolts used to tap the guages on old fighter planes for. Mechanical guage is stuck.

The hardest to deal with (in most boats) is the in-tank sending unit. Often inaccessible under the deck with little or worse- no access.


Good luck!