Seems like every 1997 2.3 I see has the egr vacuum line disconnected or cut. Anyone know why? Seems like that motor in particular. Also I was changing my plugs I got to the 4th on the exauhst side and couldnt get it out. Something was blocking it. I was told its just the exauhst side it doesnt matter too much. But I had Autolite plugs in it before so now I have 7 motorcraft and 1 autolite plug on cylinder 4 exauhst side. Needless to say shes misfiring on the exauhst side any suggestions?