I have a strange noise coming from the engine on a 2018 Ford Focus SE, under 50k miles still. Have had it repaired at the dealership due to oil pump blowing up essentially, bunch of other issues with it still RPMs drop (shown in my other question) and stalling to name a couple. It sounds loud and bad in general but there's also this strange noise hard to describe kinda like an angry cat purring, video of the sound linked below.
I am taking it back once again soon, just want to be prepared and be able to put it on paper of what could be the issues encase they keep up the "it's good" attitude.
Any idea what could be causing this?
Thanks in advance.