That isn't logical, fuel is a noncompressible fluid, when you apply pressure to the system that pressure will be equal throughout that system,
That is only true in a closed system, where the fluid has no escape. Flow modeling is a different matter.
Consider a garden hose. The spigot has ~ 50 PSI when shut off. The end of a 50 Ft hose has considerably less when the water is flowing. The pressure rises at the end only if it is outlet constricted. You can see this effect by placing your thumb over the exit. Hose open, the water dribbles out, Constrict with thumb and the water shoots way farther. Your thumb is acting as a restrictor orifice. If you had a Y at the spigot and two hoses, the hose without the thumb restriction would flow less than the one without. Neither would have anything close the 50PSI at their outlets... Unless you totally blocked both of them.
The accelerator pump systems fuel log pipe is a distribution manifold. In flow models, the log center flow prefers a straight path due to inertia. The stub branches nearer the source of flow, therefore get less volume to outlet. The restrictors, properly distributed, inside the manifold log, even the flow out of each outlet. Then, as you say, that 50PSI at the spigot would translate to the hose ends. But, unless that hose is actually flowing, it has limited usage.
Kawahonda reports his #2 outlet squirts farther than the rest. I speculate that this nozzle is still cleaner than the others, as it would be the last one to significantly diminish its fuel flow and stop cleaning itself. Being near to the source of the pump, it produces more volume and bleeds off pressure/flow to the log distribution system.
My thoughts, anyway. Discard if you wish.
Cheers,
