Had some blow by in the air filter. The CCV system is all new and I and get it to stop. Apperantly this is a problem with the 4.0's in jeeps. Did a compression test and the rings are good to everything checked out. turns out the problems is the intake flutes in the top of the valve cover sit to low in the head and suck up oil. The solution to this is to trip about 1/2 inch off the flutes. However I just got done pulling the valve cover off and just put a 40 dollar fel-pro gasket on it. So the solutoion for now is a 20 dollar oil catch can. and so far it has worked great.