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  1. mick3447

    1992 Mercruiser 454 low oil pressure

    There are no serial numbers on these engines, I’ve looked and my mechanic has looked. They are after market motors. I believe they are 1992 to 1994 in year but have been rebuilt, the oil pan looks different and value covers are not marine type. My mechanic has put a mechanical gauge on the motor...
  2. mick3447

    1992 Mercruiser 454 low oil pressure

    I just bought a 1992 Sea Ray 350 Express Bridge with twin 454 Mercruisers 7.4L. On the sea trial, both engines ran great with oil pressure in 40 to 60 psi range depending on RPMs; after I bought the boat, I started it up to take it out, and the port engine low oil pressure alarm went off and the...
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