Re: 1992 Evinrude 70 HP
If you premix the gas,then the VRO system has been disconnected(vro is the il injection system where gas and oil are seperate)by any chance has someone re connected the aralm wires from the VRO pump.?the unit that injects the oil and gas has wiring plugs that should be disconnected when premixed fuel is used,the VRO pump is then used just as a fuel pump.If all the wiring is disconnected from the VRO pump,then you are likely hearing the heat horn,the same horn is used for heat and low oil.Has your impeller been dchanged lately,a low water volume delivery could cause a heat situation causing horn.Just because it pees,dont mean it is getting correct volume