Train left the station...
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- Apr 4, 2020
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Why would you change plugs and wires?So we have a 1990 Toyota pickup, and my wife thinks its time to change the plugs and wires. I don't remember if we (well... I) have ever changed them. After all those years, will they come out without a fight? Preparing for this, I bought a can of penetrating lubricant.
I looked at the various reviews of penetrating lubricants, and finally bought "B'laster 16-PB" for five and a half bucks. Over a few days, I sprayed the plugs (the bases, of course) with the stuff whenever I felt like it.
Today, I put my socket on the first plug and... It came out easily. It didn't really even feel like was tight. If it were not for the lubricant, I would have been concerned that it was not in tight enough. But the plug looked fine. No pitting, no fouling, just a light brown coating. Plugs 2 to 4 were similar, very easy to come out and they looked well-used but good.
Plugs don't foul, in this era of lead-free gasoline. Wires: Electronic ignition (which has been standard on virtually all cars since 1980) provides steady high-voltage spark. Unless you have a cylinder missing, that is, it's running rough, all the time or part of the time...I'd just leave it be.