RobbyBobby, Welcome to the group. Your story sounds very similar to mine ten years ago. After acquiring my '78 Catalina 30, I motored about 8 hours from San Pedro to Marina Del Rey. By that time the A4 was barely running. I spent the next day replacing the fuel filter, and cleaning the electric fuel pump and carb. The amount of debris was absolutely disgusting. What we have found is that some of these older boats, that have sat for several years and have never seen alcohol laced fuel, react very negatively to this "solvent" being poured into their tanks. Several fuel filters later and after replacing the "non alcohol rated" fuel lines, my engine ran dependably with no more fuel issues. As you have already learned, having your engine basically sitting in the middle of your living room, makes it quite easy to work on.
Tom
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