So, i found that every one of my plugs has oil on the threads and more so up above the threads towards the porcelin. My first and obvious suspicion is leaky valve covers, but they're spotless, as is the whole side of the heads between the plugs and the valve cover gaskets, so i don't think it's leaking from there. I do have leaky breather/PCV grommets, but again, no oil trial leading to the plugs on either side.
If this is coming from the cylinders.... then 1) how the hell is the oil getting up through the threads of a tightened spark plug?? and 2) why isn't my car smoking if that much oil is getting past the rings?
If this is coming from the cylinders.... then 1) how the hell is the oil getting up through the threads of a tightened spark plug?? and 2) why isn't my car smoking if that much oil is getting past the rings?