I just cleaned the carburetor, needle, float look OK. Reassemble the carburetor and start up the engine without any problems. Today, I do a run test in the water for 15 minutes, and speed is good. But after the first stop, the engine cannot be started with either choke on or auto. Struggling for half hour, somehow it started and I am able to get her back to shore. At home, I took out all four spark plugs and all of them are wet. Clean them and install them back, and it still did not start. But this time I saw the fuel came out the water inlet/outlet opening located at the propeller area. Does the engine have a serious leak within the cylinder sothat the fuel came out that way instead of going into compression chamber. Please advice. Thanks.