Originally Posted by 2kg4u

Is it missing when sitting in the driveway and idling, or just at WOT? If it is missing at idle you can use a wooden dowel to listen to each injector. You should hear a rhythmic mechanical click from each one. If it is missing, and you do get the clicking sound on the #6 injector, the injector is firing but could be plugged. If you don't get the clicking sound, disconnect the electrical connection from the injector and probe the two terminals on the wire side of the connector with a volt meter, start the car and see if you get 12 volts. If you get 12 volts but the injector is not clicking, replace the injector.

If it is not missing at idle, the best way to check is by switching injectors around to see if the misfire follows the suspect injector.