1999-2000 FOUR WINNS MODEL 210 boat with Volvo 5.7L. Low oil pressure alarm -the warning beeper sounds on & off and on & off when boat is slowed to under 10 mph after running at higher speeds. Only way to stop beeping is to increase speed again. I have been informed it is a bypass stuck open, or a faulty sending unit, or bad oil pressure gauge, or not correct oil weight/type but no one has been able to fix. I don't recall it occurring the first year but has happened ever since, not every time but most of the time, seem to be at "no wake speed" but not in idle. The boat/engine does not seem to have any other issues running.... more a pain the ears....the alarm but does concern me and most of all concerns my guests when it happens. ANYONE have same issue or ANYONE heard of this problem or ANYONE know the fix besides disabling the alarm. Also what would be the correct oil weight/type to use for this engine.
Thank You !!
Thank You !!