See title for question
no

 

Because things can get confusing, it would be best if you were to explain fully the problem as you see it .

Is it only one plug or a couple a few or several. Which plugs , on which bank ? After a while we learn not to take anything for granted and get the most complete info available.
What have you tried? Was the engine hot or cold when removal was attempted.

 

I had already replaced no 4 which was faulty.I decided to replace the remainder.started on number 3.Cold engine.NO movement at all.Tried with longer extension for more leverage.No movement at all.Did not wi sz h to use any excessive force for fear of damaging thread.poured we 40 and left to soak in.

 

I prefer to use PB Blaster .. I believe it works better than WD 40..