Quote:
Originally Posted by Jerome74911S
More likely an air leak, as the engine tends to run rich overall. Are you referring with these comments to the picture just above, or the original 2 pictures of the same plug in the original post?
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The top photo's...your 'bad' plug looks normal on the top pic side and not so good in the second shot other side.....un even combustion for some reason that'll take some looking into.
I would like to see, if it were my ride, what a clean plug looked like under load. Quiet highway 70 mph run achieved under load then cut the engine and pull the plug roadside.....that's what we use to do when I was a kid tuning hot rods.