I've been working on this very problem over the last couple weeks. I've discovered that jeeps are notorious for 'blow-by'. It's unavoidable so I've come up with this fix and will let you know how it works. I manufactured a 'filter' of sorts with an inlet and outlet, separated internally by a baffle packed with the metal scouring pads you can buy at any grocery store. For now, I've routed the vent hose from the front of the valve cover, through the new filter and then back over to the air box. This should catch "All" of the blow by oil,gas etc that's been poluting my air filter.
The EnValve mentioned earlier is supposed to be an ideal solution for this problem as well. I'm just chosing to try this method first.
Note: Not a bad idea to get a compression test first, just to make sure the blow by isn't due to a bad piston or the like.

 

http://jeep.off-road.com/jeep/articl....jsp?id=257985

 

i have some blow by as well in my intake so im fixing it today.while i was at work*Big O tires* the guy that took me under his wing said lets diag your jeep. after the diag it said to replace the CCV grommet and Tube. part number is 4762592. but i also have more problems including the throttle position sensor. will include pics either today or tommorow and a step by step.

 

If you would like some simple and accurate instructions on adjusting/testing the TPS on your Renix, PM me with your eamil address and I'll send them to you.

 

i bought all the parts i need. the ccv grommet and tube was about $14. and the tps was $35.but they were shipped since not 1 of them was in my state....