Any chance its something in the tank?
It doesnt sound like it but maybe???
If the tank had say a marble in it and the vibes got it to resonate, empty tank = loud noise. Full tank = muffled?
You said it changed when the tank was lifted. Have you added fuel since this began?
Fuel gauge is working yes? Like the float hasnt fallen off has it?
It doesnt sound like it but maybe???
If the tank had say a marble in it and the vibes got it to resonate, empty tank = loud noise. Full tank = muffled?
You said it changed when the tank was lifted. Have you added fuel since this began?
Fuel gauge is working yes? Like the float hasnt fallen off has it?