Spark Plug: Installation

Follow the removal procedure in reverse for general reassembly of the components on the vehicle. The steps listed below are calling out specific procedures that should be followed during installation.

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• Check and adjust the spark plug gap with a gap gauging tool. Refer to: TORQUE SPECIFICATIONS .
  CAUTION:

  Special care should be taken when installing spark plugs into the cylinder head spark plug wells. Be sure the plugs do not drop into the plug wells as electrodes can be damaged.

• Start the spark plug into the cylinder head by hand to avoid cross threading.
  CAUTION:

  Spark plug torque is critical and must not exceed the specified value. Overtightening stretches the spark plug shell reducing its heat transfer capability resulting in possible catastrophic engine failure.

• Tighten the spark plugs to the proper torque specification. Refer to: TORQUE SPECIFICATIONS .