As stated in the title; My 04 3.9 (different 3.9 from my other posts, i ended up not being able to diagnose what was wrong) is having an issue I can't figure out, and nobody else seems to be have had this problem either. Car cranks, idles, and drives fine, doesn't have any lacking power problems or serious backfires, or any check engine lights either, no smells or leaks.

There's just a persistent "schp schp schp" noise coming from the passenger side by cylinder 3 and a vibrate-y idle...

Pulsing Vacuum noise and a slightly rough idle