Plug readers

Here is another run with a couple of WOT runs. What ya think now? Took 2* out of the total. Again two different plug heat ranges.

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From what you can see in a picture, the bottom plug looks the best, with the exception of maybe WOT. I can't see a fuel ring down there. If it's there and it's .060-.080 or even .100 wide you are close.

Then you need a real quality spark plug reading magnifying tool and start looking at the face of the center wire and the edges of the ground wire. On some plugs you can see some "cement boil" where the center wire goes through the porcelain.

You may be able to get a bit more intial, or get it pulling timing a bit quicker, but you are close.


Edit: I changed my mind. The timing looks pretty spanky in the bottom plug.