4.0 Rough Idle
I have been trying to track down a problem with my 4.0 I6 In my WJ as of lately. When the engine is completely cooled down and I go to start it up in the mornings it idles rough once its warmed up it runs great for the most part every once in awhile at a stop light I will feel a slight stagger. There is no engine noise. I do have a Large Evap Leak but I dont see how that would cause a rough idle. Also before its warmed up if I accelerate initially it sort of staggers but then seems to accelerate fine with no loss in power. Any suggestions would be much appreciated. I have already replaced the spark plugs. Oil has been changed on schedule as well. Where should I start? No other engine codes other than EVAP Leak. Help!?