
Once I got the boat home I connected the "ear muffs" to the garden hose and put them around the water intake on the motor. These would let me run the engine out of the water by providing cold water from the hose to cool the engine. I put the key in and turned it to on. I then pressed the button on the dash that I had wired to the starter and the engine started instantly! I was pleased but wanted to hear the motor rev. I put the boat in neutral and began to give the motor more throttle. It stalled immediately. I tried a few more times with the same result and realized either the gas was bad or the carburetors needed cleaning because the motor wasn't getting enough fuel. . . So I went and picked up some sea foam engine cleaner in a can and sprayed the whole can into the three carbs on the motor and let it sit for a while. To my wife's dismay when I restarted the motor a cloud of white smoke 50 ft in diameter billowed out of the engine and filled our yard! The motor ran a bit smoother but now wouldn't rev any higher than 1000 RPM without coughing and sputtering. At least it didn't stall any more! I tried the next logical thing - clean gas - but still the motor sputtered at any RPM higher than 1000. All the symptoms pointed to the motor not getting enough fuel.
I knew we needed to check the compression on each cylinder to be sure the powerhead wasn't damaged or the rings shot. I found out that you can rent a compression tester from the auto parts store which we did. Each cylinder checked out great at 120 PSI. I also checked the spark and it looked good on each spark plug. At this point I decided to do something drastic - I was going to attempt to rebuild the carbs and replace everything on the fuel system I could. We found a Yamaha dealer in CT and ordered the Carb rebuild kits and a new fuel line and fuel pump and filter. I also got the repair guide for the motor.