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  1. J

    240 2006 sea Ray Sundeck overheats at low RPMS

    Understood. I appreciate the help. What’s your opinion about it possibly being the circulation pump?
  2. J

    240 2006 sea Ray Sundeck overheats at low RPMS

    If the problem was in the manifolds, wouldn’t the boat run hot when underway? The engine cools down when at 1000 rpm or above, heats up when going slowly.
  3. J

    240 2006 sea Ray Sundeck overheats at low RPMS

    It’s in salt water. While in the water, that is capped. Dry dock we have run fresh water through that attachment and also with muffs.
  4. J

    240 2006 sea Ray Sundeck overheats at low RPMS

    Just found out from my mechanic that we already replaced the check ball assemblies
  5. J

    240 2006 sea Ray Sundeck overheats at low RPMS

    ?
  6. J

    240 2006 sea Ray Sundeck overheats at low RPMS

  7. J

    240 2006 sea Ray Sundeck overheats at low RPMS

    Yes/ it overheats on the hose as well.
  8. J

    240 2006 sea Ray Sundeck overheats at low RPMS

    Understood. So to test this the boat needs to be in the water?
  9. J

    240 2006 sea Ray Sundeck overheats at low RPMS

    And what does seeing (or not seeing) bubbles indicate?
  10. J

    240 2006 sea Ray Sundeck overheats at low RPMS

    3 drain
  11. J

    240 2006 sea Ray Sundeck overheats at low RPMS

    I’m not sure, but it is raw water cooled for sure.
  12. J

    240 2006 sea Ray Sundeck overheats at low RPMS

    Thanks.its a Mercury Bravo III 5.0 engine. Serial number is OW384463
  13. J

    240 2006 sea Ray Sundeck overheats at low RPMS

    I have a 240 SeaRay Sun deck from 2006. Recently the boat overheats at low RPMs usually at idle speed when let run for 10 minutes or more I have replaced the impeller and the raw water pump. I have inspected all the hoses for the thermostat and the power steering cooler. The boat ones is fine at...
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