Hi everybody, I have a 2000 sea ray 180 (3.0 mercruiser) with an issue. It has always started right up (after giving it 2 pumps on the throttle) and ran perfectly fine. But now, I give it a little gas, it will still start right up and dies after about 10 seconds. It will run if I feather the throttle but stalls after I let off or keep the throttle open at the same rpm. I put in new plugs, new wires, fresh fuel and a new fuel filter. The old fuel filter was clean and didn't need to be replaced but did it anyways. I'm assuming it would have to be the carb, anti siphon valve or the fuel pump but I would appreciate if anyone could narrow it down. Thanks in advance