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Finding Fuel Leak

Alie&Jim's Carrilite

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Have a fuel leak that I cannot locate.

This is on a 1998 Cummins M11 Celect Plus. Drivers side of the head is getting wet from fuel. But I cannot find the leak. I can smell the fuel though. I can wipe it off and it will take 6-8 operational hours for it to be wet again. It's not coming from the injector pump, it's dry, It's not from the fuel filter lines, they are dry as well.

Suggestions on where to look?

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Currently raining again, fuel is appearing on the head at about the same location the rear of the injection pump is, but high. From the top- valve cover seal, head seated on block- fuel is gathering at this seam, but there is no leak at the head. Head gasket is good, no issues there. When the area is cleaned it takes 6-8 hours of run time for it to reappear enough to become noticable again. Thinking that if it was high pressure, there would be other indicators- low fuel mileage, stumble, etc but there isn't.

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