hello<br /> well you can start by telling us a little bit about your motor. what HP what year maybe a model number and the service history. or I can use my psychic powers but that takes a couple years
You said. My boat seems to run great out of the gate like a champion race horse, but after about 30 minutes it starts losing power. <br /><br />Then you said. <br />I by-passed the gas line directly into the fuel filter and the boat all of a sudden had power. After a short time the boat began to lose power again. <br />Sounds the same to me. Not you?<br /><br />You bypassed the gas line directly into the fuel filter? <br /><br />Now you want to know how to clean the gas tank?<br /><br />I know nothing about that motor but I doubt your problem is caused by dirty gas. <br /><br />Answer these guys questions if you want their help. <br /><br />Is the motor a 88 also?