- Nov 14, 2009
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Hey guys,
This is the spark plug from the #1 cylinder on my V6 Camry.
Full-size: http://www.majhost.com/gallery/Ned/misc/img_1874.jpg
What's going on with that brown scorched-looking deposit there on the porcelain? That is, naturally, outside the combustion chamber. It seems ludicrous, but are combustion gasses somehow leaking through the plug and leaving those marks? It is hard, but a determined fingernail can scrape some of it off, as seen on the right side.
I'm sure it's a good idea to replace them (but honestly, internet, that's your answer to everything) but I am curious what this tells me about my engine. Any clues?
This is the spark plug from the #1 cylinder on my V6 Camry.
Full-size: http://www.majhost.com/gallery/Ned/misc/img_1874.jpg
What's going on with that brown scorched-looking deposit there on the porcelain? That is, naturally, outside the combustion chamber. It seems ludicrous, but are combustion gasses somehow leaking through the plug and leaving those marks? It is hard, but a determined fingernail can scrape some of it off, as seen on the right side.
I'm sure it's a good idea to replace them (but honestly, internet, that's your answer to everything) but I am curious what this tells me about my engine. Any clues?