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I was having some poor running issues with my 1973 Ford 351 Q code that I thought was ignition. When I removed the plugs from cylinders 2 and 6 I found that the plugs were damaged in a way that I have not had happen before. I have taken pictures of them and was wondering if anyone has any ideas as to what happened? I replaced the plugs with new plugs cleaned the others and it returned to running just like before. Thanks for any ideas on this..I have had a few stumbles with backfire in the manifold which I think maybe lean carb mixture am waiting on the calibration kit to try to enrich the mixture on the Edelbrock #1406 carb. Les
This was from cylinder #6 This was from cylinder #2
I will try the richer mixture as soon as the calibration kit arrives but in the mean time reducing the ignition advance would be a good try. I just passed the emission test here in Arizona with quite lean numbers which I had to adjust the timing to pass. Any other recommendations to try? I don't have a scope to be able to inspect the piston tops but looking in thru the spark plug holes the tops look very dirty. Les
