1998 Mercury 25 2-Stroke Squeak

[MotorlessCSJ16]

I have narrowed down the squeak issue to some sort of air/fuel mixture coming off WOT. The reason being as I didn't notice it while I was running WOT (maybe I just couldn't hear it) but when I got back down to 1/2 throttle I did notice it. I decreased RPM to idle and went to give it more gas and it sounded like it burned off some carbon (popped sort of) and no more squeak. It ran perfect from that point.

I haven't tried to run it WOT since the pop. So I'm not sure if it's fixed or not.