Expedition & Navigator1997 - 2002 and 2003 - 2006 Ford Expedition and Lincoln Navigator
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2003 Expy 5.4 w/160,000 miles runs well. I have owned for past 20,000. I want to do a tune up on it, what all should be done? I am thinking: New spark plugs, new fuel injectors...what else? I pull a 7,000lbs. 27ft. travel trailer with it and it only gets about 6mpg, is this normal? Going to be making a long pull to Orlando from Atlanta in September want everything to be A+.
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