Went to gas up couple of weeks ago and it was filled to the top and than some. Gauge read full. Drove 200-300 miles and gauge went to 3/4 full and stayed there. Should have dropped to 1/2. Stopped for a day and the gauge still showed 3/4 full.
Other dash readouts seem fine. Not an Actia dash. Think the sender/float inside the tank got misaligned due to the full fill up ?
One suggestion is pound the metal fuel tank with a hammer. Not yet tried this.