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This weekend while at Lake Powell we were experiencing vapor lock in our jet boat. The boat is a 21' Commander with a carbureted 502. After a 1 hour run we parked at a beach and hung out for about 45 min. Loaded up, started up and made it 100' before it died. Opened the hatch and let it cool off and set a damp shirt on the fuel pump and fuel rails. 30 min later it stared. What could be done to prevent this? The engine has had 30 hours/3 trips on it before it stared doing this but this is the second time it's been in 100*+ weather. It did stall in front of RR a few weeks ago but it fired back up right away oint The electric fuel pump and filter are mounted on the back of the engine. Would moving the pump and filter off the engine to somewhere else like the transom reduce the heat soaking and prevent the vapor lock? Is there such thing as insulating the fuel lines to keep them from getting hot?