Update
On Pauls recommendation, we did some more testing today. We verified the firing order and it was all correct. We unplugged and reconnected each plug one by one to see if the knocking would stop..It continued. The knocking noise has not changed and is the same sound as it was when I first heard the motor. It hasn't gotten worse or better.
Paul also asked us to check the timing but we couldnt get an accurate reading because the timing light was damaged and was not reading accurately. Apparently one of the wires to the light was cut.
Saga continues!
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