Investigate sender
If slight movement’s present, it implies the gauge is receiving a zero or small input from a faulty or mis-wired sender. Fuel level senders earth directly to the tank, if it’s metal. Check they’re able to do so.
If slight movement’s present, it implies the gauge is receiving a zero or small input from a faulty or mis-wired sender. Fuel level senders earth directly to the tank, if it’s metal. Check they’re able to do so.