Spark plugs blackened

Great work ethics, @db4690!

Unfortunately, my limited experience trying to find a go-to mechanic resulted in two categories of failures: either they would fail to address the issue from the first time (and usually leave some parts like clips missing/broken) OR they would start making some bogus upsell items car obviously did not need :frowning:

Slowly, but surely it set me on DIY route.

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