Ridgerunner Posted September 13, 2006 Share Posted September 13, 2006 Just wondering what the average lifespan of sparkplug's are in the Blackbird? I did find some cool info on this website about the codes for NGK sparkplugs. http://www.math.uwaterloo.ca/~rblander/NGK.txt NGK.txt Quote Link to comment Share on other sites More sharing options...
dunedain Posted September 13, 2006 Share Posted September 13, 2006 Just wondering what the average lifespan of sparkplug's are in the Blackbird? I did find some cool info on this website about the codes for NGK sparkplugs. http://www.math.uwaterloo.ca/~rblander/NGK.txt Good question and find. I dont run mine to failure but I changed them once at 15M miles and they looked great so I went 25M mi on the next set and they looked and same. Perfect. I figure I'll let these go to 40M mi to see what they look like. Quote Link to comment Share on other sites More sharing options...
sokanxx Posted September 13, 2006 Share Posted September 13, 2006 I pulled my factory plugs at 20,000 and they were still in excellent shape. I went ahead and replaced them with new NGK Iridiums. Quote Link to comment Share on other sites More sharing options...
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