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One important caution guys: please, please, either don't use a torque wrench on spark plugs - instead just do it gently by hand. There is a washer anyway that is designed to get squished, so all you need to do is gently wrench it down until you feel washer go a bit. That's it. Don't torque any further.
Or if you are anal about it and do want to use torque - then please check that torque wrench of yours before you attempt torque spark plugs down. Cheap or faulty torque wrench can brake the spark plug and you'll end up needing a new head for engine. With N63TU price - it's pretty much game over.
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