If you've ever tried to remove old spark plugs from a cylinder block, it's probably because the idiot in front of you was trying to save $4 and couldn't use anti-seize sticks when installing new spark plugs. You'll curse the day you were born if the spark plug blows while it's still in the block. Extracting any of them is a real process and you need to buy special tools for that! Use anti-seize compound when installing new spark plugs. Please.
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