I have a 1985 140 hp. I think I might be having a carb issue. I hooked up a fresh tank of gas and ran it at home. it will stay running fine but when I put it the water It won't stay running. it will start up and run for a min or so then die out. I have the idle screw in all the way. when the chock lever is up some it will stay on. I also wonder if my timing is off some.