No, water is thicker than gas.
I would also suggest mixing oil in the fuel to make it easier to identify a leak.
I removed mine, rinsed with water and kept emptying and repeated rinsing till I was happy with the cleanliness. Then added about a gallon of gas to help remove leftover water and other possible trash.
The sending units being removed during this whole process is helpful.
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'75 Cuddy with '00 Johnson Ocean Pro 150 horse
Benny
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