Nah, he wasn't just pulling my leg. In fact the test results were printed out on the inspection sheet, and at the time (mid 90's) I also had an '88 F150 with the V8. I matched the percentages up between the two and the Jeep came out on top in almost every thing that was measured for.
That said I had a mechanic at one of the dealerships tell me, about the same time, that they routinely saw the older vehicles getting better test results than the newer stuff. His reasoning for it was that tuning up the older ones could be done alot cheaper and by the owner, while the onew with the newer technology often had to go back to the dealership and as a result cost an arm and a leg to tuneup. The result of that was that the older vehicles stayed 'tuned up' and running clean while the newer ones were let go as long as possible between tuneups in order to save money, and usually didn't get anything at all done until they were nearly 'dead'.
I can only assume that's why the most modern vehicles have all of the new self diagnostics, and, as far as tuneups go, have nothing that can be done to them short of changing the plugs. It's to the point that, at least here in NC, they won't pass the test at all if the check engine light is on.....even if it's for something as simple and stupid as the gas cap not being tight......
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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