Spark plugs are as follows. Number one was coffee brown two and three still look new like no real change. I pulled and checked spark and it was good on all. Then I pulled plug wires while it was running the top one made it die the one in the middle made it run bad and the bottom one had no change. Is that because of a bad coil or a dead cylinder or bad power pack? It was sparking when I checked the spark on it. I have already replaced the top coil it is new and was told the other ones was good but now I am not so sure? Thanks for all the help.
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