200k mile 07 well maintained Aveo
My wife had me drive her car and when I hit the gas hard there was a noticeable lag, jittering, loss of power, and engine light. The code came back something like 0301 whatever it was we googled it in the moment and found a cylinder one misfire. The spark plugs don't have the little nipple for good spark BUT they were SOAKED in oil even after changing the valve cover gasket 6 months ago.
Please advise.