Motor was running fine! Ran out of gas and got towed into marine for fuel. Filled it up, turned the key and it initially fires but dies. I can pump the throttle to put fuel in it, turn it over and it will fire but shut right off. I can keep it running by starting fluid but as soon as I stop spraying, it will die. Whats wrong? Had 15 people on pontoon boat and 6 in ski boat ready to tube and ski but had to be towed back to dock for a ruined afternoon party.