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just get one socket and try it until you can unscrew it, or weasier you could have an old sparkplug that's sitting around. anyway my toolbox has a special socket for plugs. it has to be longer than the others so the end of the plug won't hit the extesion or the ratchet. Why do u need a torque wrench ? 1/4 turn is enough to tighten them plugs.
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