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Just repowered with a 2020 Mercruiser 383 MPI and am having performance / excessive fuel burn problems.
Here are the quick details:
—24 foot Sea Ray that had a 350 Mag MPI
—Haven’t touched the props or Bravo III drive (same as before repower)
—Went from burning 11.8 gallons per hour at cruise...
Looked in the archives and haven't seen this covered for my engine...so hopefully this isn't a repeat.
Motor serial number: 0L012308
I started hearing a squeaking noise last season and finally pinpointed it to the raw water pump. I was able to do so by spraying WD-40 behind the pulley...
