i have a 65hp mecury 650 4 cyl is there a way to see if there is fuel in the float bowl without taking it all a part. and is possible for this to run on only one carb on all four cyl. it has a hose that connects to both intakes i wasn't sure if that hose could supply enough fuel to make the other two cyl fire or not. I think one carb isn't getting gas or letting the gas flow out any help would be great.