Just got this ski from my boss, it hadn't been run for about 4 years. I had to replace the driveshaft coupling, driveshaft and the bearing housing assembly. Both the fuel and oil tanks were empty. I filled oil tank and bled the lines, then filled fuel tank. I had water hose hooked up with a shut off valve inline, but never turned the water on. When I tried to start it, the cylinders had a greenish foam in them and on the plugs. Could it be that there may have been some water in the fuel line still or in the cylinders? What would be the best way to clear it all out?