I changed the plugs last month. I had 1 bad wire & changed that one. The rest were changed at 70000 miles.
I am on my first tank of FI cleaner. I can try a few more, no hurry, I just passed inspection a few weeks ago. Never changed the fuel filter, probably worth doing. I changed the EGR valve last summer when I pulled the intake manifold & cleaned out the vaccum ports. Thanks for the guidance.
