Another Plug Quiz
Finished another tune and here is the plug results.
New plugs when I took 3 pictures at 10-20-30 miles. Looks pretty good to me. Mostly ran 60, 70 mph when I shut off engine. Top speed 95. I all ways have that one dark spot on the insulator in the same place. What you say?


New plugs when I took 3 pictures at 10-20-30 miles. Looks pretty good to me. Mostly ran 60, 70 mph when I shut off engine. Top speed 95. I all ways have that one dark spot on the insulator in the same place. What you say?


Last edited by aces&8s; Jul 26, 2014 at 09:31 PM.
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