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Q:

I would like to do a tune up on my car, but I see no spark plugs or wires, what on 2003 Lincoln Navigator

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need for a complete tune up.. Can I do this myself?
(2) Answers
yes. rec. performance type coils as replacement. accel supercoils are good as well as more cost effective than OEM replacements. rec. e3 spark plugs as replacement however any premium type plug will suffice.
rec. fuel system clean. ethanol treatment to 1 tank premium fuel.
rec. upgrade conventional air filter to high flow design(K&N).
rec. oil stabilizer treatment with next oil change.
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