What is your question?
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What is your question?
ok on a '06 Kia Spectra EX manual, are there any particular spark plugs that historically DO NOT work well with Kia?

NKG I can work with. Thanks for the answer
Yes, anything that is not the factory type of Spark Plug. When you replace Spark Plugs, you MUST use the factory recommend type, or there may/will be issues.