take a 90 degree grinder with a small wire brush end and brush all around it to knock off any rust. do anything but twist it.. wiggle wiggle wiggle. when you get it out, take the wire brush to the sealing surface... it has to be perfect or itll toss cam codes and die
I went in from underneath and the front of the engine. But I had a lift. I did not remove anything. Like stated before 1/4 inch long ass extension and swivel. Patience is the key.