1999, 360 modena, my gas gauge which is digital is showing full all the time, what can i check or adjust ????? thanks, john......
See if the car had the fuel gauge TSB performed. Fuel sender unit should have been replaced if there's a problem.
The best thing to do is to have your Ferrari service technician look at it. If it's the fuel sending unit, it should be a free fix under the TSB. Do you have all the service records of your car?