Hey everyone I recently purchased an old town flat back canoe for poling the flats of the upper Laguna Madre and it came with a 2012 mercury 2.5 4stroke outboard engine. When I bought it I knew that the engine had some carb issues but the previous owner said it was due to gas sitting in it too long. So I took it apart cleaned it all out and put it back on. It starts just fine but when I’m in neutral it will idle normally but then all of a sudden will rev super high for a bit and then die back down. After googling the issue it sounds like the Idle Air Control (IAC) valve could be causing the issue. I’m wondering if any of you have experienced this issue or something similar. Any help would be greatly appreciated.