I'm not 100% familiar with the VG or VQ engine in the Pathfinder/QX4, if you have a FSM, or know your way around that vehicle's engine bay, though with me, personally I don't trust myself to do anything but minor work to my car. I'd leave it to a professional. Though if you have all the right tools, and the skills, go ahead and do it yourself. Though if it gets bunged up, you've got no one to blame but yourself
