When my port engine began making fuel in the sump, I put air pressure to the fitting on the aft end of the block where the return fuel exits. I got bubbling out of the top of one of the injectors, and a rebuild of all the injectors fixed the problem. Since you are already in the process of injector rebuild, my suggestion is that after you get the injectors and the return fuel fittings all restored, start the engine before the valve cover goes on. Shut down and perform this air pressure test I described to see if you get any fuel bubbles,
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Rich Gano
FROLIC (2005 MainShip 30 Pilot II)
Panama City area
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