So I took the engine cover off to clean the engine and found a hoel in a hose twords the back of the engine. It is about the size of my finger, I can tell it is sucking air because when I plug it a whistling noise goes away. No check engine light. Anyone have any idea what the hose is for? I have an appt next week to change belts and am wondering if I can wait that long? Thanks guys
Attached are a few pictures for soem reference.

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