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The electrodes are Inconel so immune to any temperature that can be made in a engine: The same applies to the platinum center electrode. A defect in the plug or some mechanical damage would be required to remove the electrode. Long ago I found 3 bad platinum electrodes in 6 Bosch plugs after modest mileage ( like 20,000 miles), I concluded some defects. ...


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Because I was low on coolant, the engine went too hot and the spark plug electrode broke off? Yep that's possible - running low on coolant (particularly with what amounts to a malfunctioning water pump) could create "hot spots" in the engine, potentially leading to the spark plug failure. If you're frequently running around on less than half the coolant the ...


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