Everytime I pull my upper intake (Edelbrock Perf.) I have oil in it. Would this have anything to do with the PCV valve? Also would this oil in my upper intake travel down through and cause detonation at startup? This is the only time there is detonation. About 4 times as soon as I start up but after that there is no more. Im really having a hard time with this. ANY help is greatly appreciated.