My 86 beater 4Runner passed the biennial smog test today. I didn't realize it was this clean running-although I have never had any problems with it during the 5 yrs I owned it.

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Here are some pics of the old spark plugs.


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These are about 2yrs old and approximately 15K miles. Seems to me that it's running a bit on the hot side. Anything to worry about?