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Purdy Swoft · 05-16-2018, 05:13 PM

Thats about the way mine looked before changing to W18 Champion plugs . Low speed stop and go driving can contribute to sooty plugs . After your engine gets more miles on it and gets driven longer distances at cruising speeds it should improve . If not, try hotter plugs .

05-16-2018, 05:13 PM	#9
Purdy Swoft Senior Member Join Date: May 2010 Location: Alabama Posts: 8,099	Re: Would you recommend a hotter plug? Thats about the way mine looked before changing to W18 Champion plugs . Low speed stop and go driving can contribute to sooty plugs . After your engine gets more miles on it and gets driven longer distances at cruising speeds it should improve . If not, try hotter plugs .