I have an '03 33 Baja Outlaw w/ 496HO's. While running pretty hard in the ocean in 2- 4 ft. had the whistles come on. Checked all gauges, all fine and immediately shut down. Turned batteries off and checked all fluids, all good. Turned batt.'s back on and off I went for another 1 hr. and on it came again. Followed same procedure and all was well? I guess again. Ran the boat again this past weekend and same thing happened. Any ideas? TIA.

Could be the CO monitor. Try pushing the test button. Mine beeps periodically.

water pressure sensor.....

Outdrive oil level sensor.
I rough water, mine sometimes beeps.

Stay out of the Ocean

On a Formula I had, the bilge pump under the cabin entry step "it was stuck on". There is a little button to push or slide to get it "unstuck"! good luck

It is not periodic. I've heard what you are referring to at home in a battery operated CO monitor. Thanks anyway.

Hey Mike, I don't think so, water press. gauges indicated good pressure. Any other ideas?

I thought same thing. Shut down and checked, all good. I should note that the last time out w/ this occurrence was in flat water.

fuel sensor??? for fumes??