OK... anyone else deal with this before?
I was examining the head and noticed oil on the head.... I thought it could have been the spark plug seeping oil so I cleaned the area up and fired the engine back up.
I noticed between the nut and stud that there was small bubbles forming hence the air leak.
any ideas how this can happen?
the nut was a bit smaller than the stock nuts and I placed a split lock washer under the nut. I have replaced it with a different washer and the stock nut... fired it up and no evidence of bubbling oil but am i hiding another problem?