92 protege new spark plugs & smoke

[bestgf7]

Manual 92 protege:
Head gasket was replaced a few weeks ago, so it can't be that
Just got new spark plugs, but it idles weird and it still misfires. It also is smoking (not from the exhaust). There's oil in the plug holes.
What should I do?

[bestgf7]

Okay, I cleaned out the oil and there's no difference. I'm thinking that one of the spark plugs could just be faulty. And I wanna say it's a filter, but it's laying flat and there's this thing covering it, but it's not screwed down. My dad said it should be okay as long as there's suction, but I'm scared that there's more to it. I'm now realizing how much I know about cars for being a girl, but I would really like a second opinion. Thanks!