Why change the spark plugs in a 07' Civic? This vehicle is fitted with long-life plug. It probably does not need to be changed for at least 100k miles.How to change spark plugs in 07 Civic Si? Is there something new in cars, I've been changing spark plugs in cars and airplanes for 50+ years. What did they invent a new spark plug. I take them out, throw the old ones away and gap the new ones and put them in. What is missing?
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