Was gonna comment this . Also , it ' s just a fucking great game in general . <| sep |> Lot of dumb fuck internet experts in there . <| sep |> People keep bitching how hard it is to get nitain though . <| sep |> Hmmmm . In an ideal world , leaving a tap on Prime shouldn ' t do any harm because the floats in the carbs act as a secondary fuel shutoff . But it doesn ' t always work like that . In your case , they or at least one didn ' t shut off , so it probably drained the tank and that means all the crud at the bottom went through . Might have gone into the carbs , but more likely to have got caught in the fuel tap filter , blocking the flow . I ' d start with the tap . Pull the pipe off and turn it to Prime again and see if the fuel flows properly . If it does , try rapping the float bowls with the shaft of a hammer to dislodge any stuck floats . And if none of that works then I ' d start looking at the carbs .