Check your sending unit gasket,then check the hose to steel connections finally the gas cap .Also check your hard line connection to sender.
You can sniff around and the sent will get stronger when you find it. I can fill my tank to the top of the fill and not smell gas inside the cab.Outside yes as tank vents I can smell gas, no smell at 3/4 tank.
Last edited by sack; 09/10/2020 6:44 PM.