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Should I be concerned about the coloration of these spark plugs? (lemmy.zip)
submitted 6 months ago by to c/mechanicadvice@lemmy.world
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Bought this car second hand, they apparently put iridium spark plugs in, but i want to know if I should be concerned with the buildup and rusty appearance it's developed. For all I know this spark plug could be from 10 years ago.

Do I need to replace the plugs, and is that actually rust? Does this mean I have an issue with my head gasket?

Edit: Thanks guys! I'll be ordering some new plugs soon.

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[–] 3 points 6 months ago

While the plugs are out, scope into the combustion chamber with a fiber optic camera. That will tell you a lot.

The way to check the head gasket integrity is to test the coolant for impurities using a chemical coolant test.

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