Spark Plug Inspection
Spark plug condition is indicative of engine operation. Check the spark plug firing end condition after the engine has been warmed up and the vehicle has been driven at higher speeds. Immediately check the spark plug for correct color. See Spark Plug Condition.
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Remove the spark plug cap 1.
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Using the special wrench provided in the tool pouch, rotate the spark plug counter-clockwise to remove it.
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Reverse the procedure for spark plug installation. Torque to specification.