I had my engine apart and after putting it all back together I saw this small bowl like piece and I hope it is not important. I have a Toro 1438z. https://i.ibb.co/KV4bZBD/20190516-002213.jpg
Just as I finished mowing the idle went slow, as in the slowest it can possibly putt without dying. I noticed a black wire with a plastic connecter on the end not plugged to anything. It seemef to be routed towards the rear of the engine. I'm assuming it is the reason for the sudden slow...