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2018 Cadillac CTS-V — single-cylinder misfire comes and goes

SunBeltSellerCommunity StarterMay 8, 20262018 Cadillac CTS-VMiami
2018 Cadillac CTS-V, about 55,500 miles. A cylinder-specific misfire code appeared after one rough start, then cleared and the engine feels normal. Plugs are not very old. Would you swap coils, inspect plugs, look at injector data, or wait for it to return?
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CanyonDetailer620Community StarterCommunity StarterMay 8, 2026permalink
I wouldn't throw parts yet. If a shop can't duplicate it on the 2018 Cadillac CTS-V, bring a video plus freeze-frame data, not just a story. That's the branch I'd chase this week. No need to make it theatrical. If that fails I'll eat the diagnostic fee.
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