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Old Oct 3, 2024 | 04:53 PM
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I am a new to corvette i had recently bought 2021 c8 htc , everytime i start the car a black sometimes white burst of smore comes out, not a lot just in the initial starts then fades away quickly, maybe it is normal as it is a dry sum I assume
video below
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htc start.mov (17.53 MB, 148 views)
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Old Oct 3, 2024 | 04:56 PM
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Usually just moisture in the pipes burning off
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Old Oct 3, 2024 | 05:05 PM
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white = no problem
blue= not good
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Old Oct 3, 2024 | 06:02 PM
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Mine did that in the small town dealer showroom where it sat for a little over a month, (battery needed to be charged while I filled out the paperwork). Very brief and never did it again, but looked exactly the same as your vid with only 2 miles on it.
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Old Oct 3, 2024 | 06:21 PM
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Does not look like it is a real problem.
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Old Oct 3, 2024 | 06:26 PM
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Direct injection engines run rich at start-up to heat the cats as quickly as possible for emissions reasons. This video is completely normal.
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Old Oct 4, 2024 | 08:20 AM
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As already mentioned it's normal and they all do it upon start up. It's just a very rich mixture to help warm up the cats faster.
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Old Oct 4, 2024 | 04:35 PM
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Normal and expected. Direct injection car too, give it the ol' Italian tune up here and there.
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