Quote:
Originally Posted by trader4
Not much on mine, how about yours? I replaced original plugs at 125K, they were still fine, not badly eroded. Car was running fine, MPG before and after was the same. And what does what's happening at the actual
electrode, where it's exposed to plasma, have to do with the spark
somehow burning the exhaust valve, which isn't at the spark?
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Depends on where the valve is burnt. The head is a hemispherical head so the spark plug is right in the middle of the four valves.
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