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Spark Plugs dark and wet at 29k miles 2.7 ecoboost. Is this normal?
2021 2.7 Ecoboost. A COVID truck that sat in a lot waiting for chips for 6 months. I’ve been having knock sensor issues where it says “electrical problem detected with knock sensor”. Dealer can’t figure it out. So today I decided to change the plugs to eliminate that possibility. The plugs...- thebestbear
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- Forum: Mechanical Maintenance and Servicing (Break-in, Oil, Fluids, Plugs, etc)