Quote:
quote:Originally posted by Tom and Marj Green
remember - the speed at which wire sets go bad is related to how much pollution you drive in. many, many years ago, wire sets lasted much longer, but with the cruddy air we drive in, they go faster. if you live/drive in clean (cleaner) mountain air, you'll probably get very good mileage out of you wires; whereas, if you live in smogville, good luck in getting more than a two years out of your wires . . . . . . just so you know.
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How do you reconcile this view with the fact that most major cities have cleaner air now then they did in the 1960s?
http://www.cleanairprogress.org/clea...tion-facts.asp
Other Reason: Higher Underhood Temperatures.
Modern engines run hotter (in order to reduce pollution), in smaller engine compartments, and the plug wires are crammed in surrounded by pollution control plumbing, and more power gee-gaws then we ever had back in the dark ages. This bakes the plug wires, causes the insulation to break down, and sure enough, there is always a nearby conductor to siphon the spark away.
Also, lean-burning (pollution fighting) engines are more sensitive to weak sparks.
And little 4 cylinder (less pollution) fuel-injected engines don't hide the occasional missfire as well as a honking carburetor-fed V8.
Odds are that no matter how clean the local air is, the local climate between the camshaft cover and the upper intake manifold of a pt cruiser idleing in traffic is going to be unpleasant.