I have a 522VX with the Yamaha Digital Gauges. I am having a problem with the gauge with the oil level/trim/tach.

The Oil level shows fuel always. I replaced the sending unit in the tank in the bilge which did not fix the problem. I can however pull the sending unit out and the gauge will show empty and of course alarm will go off. At least that part is working.

Has anyone had this same issue?

Since the alarm goes off and there is a reserve reservoir on the motor plus I now am very diligent with keeping the tank full and 2 gallons spare in the boat I am not to the point to spend almost 400 bucks on a new gauge. And if the main tank is empty the boat will only idle when down to the reserve reservoir.

Plus I am not totally convinced the gauge is bad since it will show empty when the sending unit is out.

Wondering if there maybe some disconnected wiring between gauge and sending unit I do not know about.

Just for reference the oil level is 3 horizontal bars on the bottom of the gauge.

Any assistance would be greatly appreciated.