Started up my 2015 merc 90 for the first time

[Jmcclurg]

So I just fired up my 2015 for the first time since I bought it. It has just over 600 hours on it. And it seemed to hunt a bit at an idle.

Is this normal what could it be caused by?

Thanks

 

[Texasmark]

Might toss some Sea Foam in with the gas. Auto parts have it. Cleans OB engines real well, fuel lines and all and carbon in the combustion chamber. Directions on can but first can I'd double the dose then keep in in the fuel. I was never without it once learned of it on here.

 

[Jmcclurg]

Ok thanks I will try that