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I have a 2017 24 limited s. I was sitting quietly floating in the water and every 10-15 minutes I heard a hum. Didn’t think about it until the next time I was doing the same thing and heard it again. I finally found it. It was the bilge pump in the engine compartment. I had it on auto mode. Spoke with my yamaha mechanic and he said, that is what it is supposed to do. I don’t understand that. If the pump is dry it shouldn’t run. Again he said that what it is supposed to do. So it runs every10-15 min all the time the batteries are on.
I have a 2017 24 limited s. I was sitting quietly floating in the water and every 10-15 minutes I heard a hum. Didn’t think about it until the next time I was doing the same thing and heard it again. I finally found it. It was the bilge pump in the engine compartment. I had it on auto mode. Spoke with my yamaha mechanic and he said, that is what it is supposed to do. I don’t understand that. If the pump is dry it shouldn’t run. Again he said that what it is supposed to do. So it runs every10-15 min all the time the batteries are on.
So the new bilges are designed to run every 10 to 15 minutes to sense water? That would drain the battery over a week or two if the boat is sitting in a wet slip wouldn't it?
The newer boats like yours @Chris Kasz do not cycle every 10-15 mins looking for resistance. They are directly wired to the battery, thus always on, but have an electronic sensor to engage the pump. I don't know if they draw any current until they engage the pump.
So the new bilges are designed to run every 10 to 15 minutes to sense water? That would drain the battery over a week or two if the boat is sitting in a wet slip wouldn't it?
If my boat is on its mooring with cover on zero water gets in the bilge. Obviously if people are climbing it and out some water will find the it’s way to the bilge.
There’s lots of threads and posts about how the pumps are set up in various models/years...always a good idea in my mind to have a second pump on a float switch wired direct to the battery with an in-line fuse as a backup.