So my a3 started having idle surge issues, and eventually started to throttle cut. I think I found the issue, and that is that the screw that looks like it holds down an o ring that covers a hole in the pcv is missing. Its right where the breather hose screws to the pcv. I'd attach a photo, but I'm new here and not entirely sure how lol. Was wondering if anyone knew what size/type that screw is so I can replace it?
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