2003 GTI Fuel Gage

[mccassoc]

I have 2 '03 Seadoo GTI's with fuel gages that never register full. As a result, I am always looking at tanks that are under half. Is there a way to adjust it?

 

[seadoosnipe]

Fuel gage test?

Your problem is more likely the postition of the fuel float sensor. There is a test you can preform that requires you to take several sets of measurements of the float in reference to it's height from the bottom of the tank and compare it to the amount of resistance being sent from the sending unit. I have these readings if you want to test it. You'll have to have easy access to your fuel sending unit and a multi meter.
Your fuel gage is working from the amount of resistance measured by the sending unit, so as long as you see the needle move, it's good.

 

[kustomkarl]

If the resistance isn't available on the 2 wires at the top of the sender on the tank or they register wrong, than chances are that the magnets that make the resistance in the guage fell into the fuel tank, or are suck. You have to remove the fuel sensor from the tank and fish around for the magnets, in the bottom of the tank, then replace them in the sender for it to operate properly, or look at the sensor to see what is stopping the magnets from working properly. If this is what you find let us know and we'll explain how to re-install the magnets. If you get resistance on the sensor wires at the tank check continuity on the wires to guage. If that checks out ok...you need to replace the guage.
Karl