[mueller944s2]

car is home and valve cover pulled off. Everything is in tact, started it and nothing appears to be wrong. Oil pressure was good but still have that knocking/slapping sound. Sounds like it's coming from the area where the cat and resonator connect, it was already leaking air there from when I took it apart a month ago, but this sound just randomly started and is loud. Plus idk how to explain my oil pressure dropping to 1 yesterday. While the valve cover is off I'm replacing the chain tensioner pad.