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So I picked up, based on the recommentdations of a few others, a shiny set of Motorcraft AZFS22C aka SP-463 spark plugs and put them in my SVTF last night. Now I'd read that some where gapping at .055 and some at .060 for this plug, so I thought I'd see which worked better. Right as it started getting dark, I got them in at .055 and fired up.

Great! [clap]

Naturally I began to overthink this and decided that, after reading a few more comments online, decided to go back and re-gap to .060. Coolio. So more or less in the dark while the kids watched Spongebob, I regapped to .060 and fired up. Gnarly! Really gnarly. It sounded like it was running out of gas.

Now here's my uneducated query. Was .060 the wrong gap? Did I not get a plug wire on correctly in the dark? Or could I have fudged something up?

Thoughts? Opinions? Bueller?
 

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Gnarly?? Check the leads etc. A .005" difference in gap shouldn't make a difference. The gap increases with mileage anyway and particularly with these "standard" plugs, the gap increase will be quite rapid. If this is an essentially stock daily driver, why not just use the stock platinums of the correct heat range? Don't get suckered in by some of the "confusion" regarding spark plugs and a lot of haywire theory.
 
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