Put the new one in by carefully tightening
it by hand and then finish with the ratchet, do not tighten
too tight or you might damage the engine or the spark plug.
Some people like to use anti-seize on the threads of the new
spark plug to lubricate and prevent cracking. You can get
a packet of anti-seize at your local auto shop.
Put the wire back on until you hear it lightly snap or pop.
Repeat the process for however many spark plugs you have.
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