Currently I have 92,668 miles on the Jeep. I'm the third owner and I know some of the previous maintenance done on the Jeep. I wasn't sure if the plugs had been changed before I bought it or not.
I decided to order new Bosch Double Platinum plugs from Rock Auto. The plugs came last Friday and I decided it was going to be a weekend project.
I saw that the drive side plugs were easy to get to. I changed those plugs in around 5 minutes. The old plugs didn't look bad (or so I thought) but I decided to change them anyway.
The passenger side is a whole different story. While trying to change #3 the wire broke and left the connector on top of the plug. I've since found out that it's a common issue. When I pulled the plug and checked the gap.. There was no gap. The top of the plug was bent down closing the gap. I never noticed any issues driving, so I'm not sure when that happened.
Plug 5 was a total nightmare trying to get to. I ended up getting the plug out but it took a long time. It's probably not possible to get the plug out without some sort of socket joint.
I ended up replacing all six wires as well. I started the Jeep up and it runs perfectly.