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Old 04-17-2003, 12:33 PM
Duke2.6 Duke2.6 is offline
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Join Date: Mar 2003
Location: Southern California
Posts: 2,011
For '88 the recommended replacement interval is 30K miles, with a "remove and inspect" at 15K; 30K is typical for a conventional copper core plugs on an engine running unleaded fuel, but on a clean burning engine they could probably run 60K before the electodes are seriously worn.

The recommended gap is .032", which seems a bit narrow, but it will grow with use. Wider gaps generally give a smoother idle.

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