Bob Vin 570
New member
2016 75hp mercury 4 stroke efi replaced plugs, coils, all fuel filters, there is no fuel bulb in this system. Fuel is clean and new. Check valve has been by passed and checked . Engine will not take acceleration. Bogs and stalls then I get an alarm loud beep I replaced the fuel assembly which is both fuel pumps and the fuel pressure regulator. I bought an after market one. Not O E

