Check your valve adjustments, first.
That is a big job, it takes about 1 hour just to get the pass side valve cover off, with the AC box in the way.Driver side not so bad but the cleaning of the silicone off the head surfaces is very time consuming also. I;m taking a breather working on some A/C lines and drier relocation for now. I got my china catch can so I also have to put that in.