Hey everyone!
A bit stumped here. The car is misfiring, but only warmed up.
Basically, last night the car started misfiring really bad, but I quickly found it to be a vacuum leak from the intake-to-fuel rail hoses. Plugged them back on and everything ran like a dream after that. This evening, same exact noise and codes, but can’t find a leak and the PCV seems to be fine.
Symptoms:
PVC and dipstick smell like fuel
Runs fine on cold, misfiring cylinder 1, 2, and 4 once warm.
o2 and secondary air sensor code

 

Have you checked your coil packs for oil residue on them?

 

This is standing out to me. Do you also smell fuel in your spark plug tubes?

https://www.google.com/search?q=s2ki...hrome&ie=UTF-8

Also, you say you have the O2 sensor codes, is your primary O2 sensor working properly or has the catacomb in the catalytic converter fallen apart inside and destroyed the O2 sensor tip? This is a common problem with our cars.