I have a 25 year old pulse. Because it is discontinued no luck getting any support for it. The main plug is a Champion 121500. There is a second plug located next to the main plug. The porcelain was cracked and upon removal disintegrated. It reminds me of a heat sensor. The porcelain around the center electrode is 1/4" long and the center electrode protrudes another 3/8" past that with no electrical ground. I have no idea what this plug designation is. Anyone of you know?
The main plug gap is 120/1000. The main electrode is pretty charred and protrudes about 20/1000 past the porcelain insulator. That will be replaced also.
Appreciate your time.