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i just did the plugs in a2011 4,0 I left the seven manifold in the manifold Ibacked them so they threaded into the manifold I also did not remove the throttle body frome the manifoldNOTE
Changing Nitro Plugs 4.0L
I have attempted in separating "Changing Nitro Plugs 3.7 & 4.0L" into two THREADS. One for each engine type, since there are differences mainly the requirement of removing the intake manifold on the 4.0L (R/T) engine to end any confusion. I did not remove the posts concerning the 4.0 engine from the original thread but did mark them in RED.
Hopefully this will help.