Yes, it would be the fuel delivery test. This will tell if: fuel filter, or fuel lines are clogged; and whether the fuel pump is not operating properly.
Your would take the return line, going back to the fuel tank........remove a connection and run the fuel pumps for 30 seconds, while you collect the fuel in a container. I look for a rubber hose connection to remove, install a union to a longer hose, and run this hose into a clean gallon container. The fuel accumulated should be about 750 cc/ 30 sec.
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