Yes, I've had many plug wires that were fine until I had to change plugs and horse off stuck boots. Especially if a hemi-type engine with long boots that pass through the cam-train area.
That being said, not counting physical damage like that, I've had very few problems. Since modern engines use sophisticated electronics that can sense even small misfires or uneven firing/combustion - seems it makes sense to use that benefit and replace something when it is actually needed.
On the subject of Dodges, my 98 Grandcarvan with the 3.8 V6 got it's first plug change at 140K miles. I bought it from the original owner who just paid $200 for a "complete tune up and service." Yet, the original plugs were still in there burn-gapped at over a 1/4". And, even at that, that plug wires held up fine.
I see now why they use platiumum 100K plugs in those things. What an absolutely horrible job it is to change some of those back plugs. I can see why the service-shop cheated and did not change them during their expensive "tune up."
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Today's Featured Article - When Push Comes to Shove - by Dave Patterson. When I was a “kid” (still am to a deree) about two I guess, my parents couldn’t find me one day. They were horrified (we lived by the railroad), my mother thought the worst: "He’s been run over by a train, he’s gone forever!" Where did they find me? Perched up on the seat of the tractor. I’d probably plowed about 3000 acres (in my head anyway) by the time they found me. This is where my love for tractors started and has only gotten worse in my tender 50 yrs on this “green planet”. I’m par
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