Today I successfully changed that damned spark plug that is between the firewall and the engine on my 01 xterra. All I really have to say is F**K you nissan. Anywho, that is done. The plug looks like it is the original with 187k miles on it. At that rate, I should never have to change that one again. I checked the gap on the one that I pulled out it measured out at .080 and the electrode was almost gone.