IF you have oil on your air filter, the rear ccv may be plugged. It is the rear vacuum hose fiting that is located on the top rear of the valve cover. The vac line goes from there to a nipple on the intake.If the ccv or the hose is plugged it would cause a rough idle. Pull the vac line and turn the ccv in the valve cover 1/4 turn counter clock wise to remove it for cleanning. Should be able to blow through the ccv and the hose.
1992 YJ 4.0 Liter HO I6
Sitting on a Rock in the Bay
Air Restrictor & Chicken Bones Gone,20 Gal.Gas Tank :) Audiovox CD Sound Bar, Front Tow Hooks. Hard & Soft
Tops. 31" x 10 1/2" x 15" Coopers
Sumer Projects:2 1/2" Rubicon Express.(Done) New Metalic Paint.(Done)
31" Tires (Done), Bed Liner. Dome Light for Soft Top
[color=blue]Blue Jeep Member #15[/color]