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I just had a catastrophic failure in my 2005 Honda Pilot. The check engine light started flashing and the engine was running rough. Felt like a spark plug wasn't firing. Limped it to the shop where the mechanic reported that the spark plug in the number 5 cylinder had disintegrated due to an overhead coil, parts of the plug were in the cylinder, and the threads in the cylinder head had melted. I have never heard of this being possible. Estimated cost between $3000 (head job) and $5500 (new engine). Feedback anyone?

closed as off-topic by Rory Alsop, Paul, Gabriel Mongeon, Move More Comments Link To Top Mar 5 '15 at 1:31

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  • "overhead coil" should be "overheated coil"? – Josh Caswell Mar 1 '15 at 9:37
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    Yup - sounds perfectly possible, and typically when you damage anything at the cylinder head it's expensive. It doesn't appear like you have an on topic question here though. – Rory Alsop Mar 1 '15 at 14:21

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