The motor would not fire. I checked everything--lots of spark etc. I realized it was not getting gas. To be sure the fuel pump was pumping, I followed the fuel supply finally to the high point immediately before the carburetor. So I removed the fuel hose from the carb intake and turned the motor over. A mixture of fuel and air bubbled from the fuel line until the fuel ran smoothly. After this, the motor started up immediately. Then the motor ran like a top. But the next time that I went to use the boat I had the same problem. This has happened 3 times. after the first time, I checked all the fuel connections and replaced 1 small fuel line. I did have to also tighten some of the fuel connections. But still have same issue. What could it be?
