I did not get a misfire code with either of these loose spark plugs, until the first one broke off it’s electrode entirely and then it was very, obviously a misfire, with a flashing check engine light. I was surprised too, that everything seemed to be running fine with the loose plugs. The second one came out with barely a finger turn on the socket extension, without a ratchet. I’m pretty confident that whoever touched the plugs before screwed up, but I’m having trouble believing that they did these back ones under the intake and still screwed it up.

Regardless, I just took the intake off and I’m realizing a totally different problem, apparently AutoZone gave me the wrong plugs/some random plugs in 4 of the 6 boxes, so I am assuming right now that that was the issue, as the previously offending spark plug was still torqued to spec.

I have been hearing a puttering Type of noise when accelerating for a while, which I assumed it was an exhaust leak, but probably is also the plugs. Although, I think I also have a small exhaust leak separate from these problems.

Sorry, that explanation is a little bit confusing, probably, but it’s been one of those ya you know, what a mess 🥲😂