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    1979 Mercury 500 Thunderbolt 50HP losing fuel pressure

    Hello, I'm pretty new to outboard motors, and am having fuel pressure issues with my 79 Merc Thunderbolt 500. I had it out and it started to lose power and wanted to stall out. I checked the ball on the fuel tank and it had no pressure. It will run fine if I periodically prime the ball, but...
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