Hesitation on throttle up

[Malpais Man]

Hi All, I have an Evinrude e50pl4ee 50hp 3 cylinder 4 stroke.(rebranded Suzuki as I understand) I recently purchased a pontoon and this motor came with it. It had been winterized and sat for the winter. I am in NM. I have had it out on the water twice and it starts right up and runs well. The only thing I noticed is that it has a slight hesitation when throttling up then runs good. I was wondering if this could be due to the old fuel which I topped off and added stabil marine. Should I just keep running her to get the old fuel out or any suggestions?

 

[oldboat1]

Check for water in the fuel. (Test from bottom of the tank -- glass jar, fuel floats on top of any water.)

 

[boobie]

You can also add some BRP Engine Tuner to your fuel which works real good.