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I ran a fuel system test on my 1976 searay with a 5.0 on a 233 outdrive. Vacumn was tested between the fuel filter and the tank. running on muffs (i know) it was -5. If I pinched off the gas line between the test gauge and the tank the vacumn pressure rose to -9 psi. At the same time a pressure...
:eek: I have a Sea Ray 233 mercruiser with a 5.0 from a 888. This setup runs great idles great, great low end and runs 4300-4500 rpms at 46 mph. Maintenance Completed. Fuel System: Rebuilt carb (except pump)-new fuel line- new fuel pump-new antisiphon valve-carb adjusted per manual including...