Tightening Sparkplugs Without A Torque Wrench

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You're installing plugs. The car has aluminum heads, which you'd prefer not to strip. Ordinarily, you use a torque wrench. If the car is anything like my CLK, the engine is a very square peg squeezed into a very square hole. There's no room for a torque wrench, and you can barely see the end of the socket. So how do you know how tight the plugs should be? Many internet mechanics say, "The 'feel method' noob!" There is another way. The Bosch way.

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