Plug reading
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From: Ft. Worth, TX
And you go everywhere at full throttle all the time? All the links you posted say to do it at the end of run at full throttle because that is what drag cars do. Your Harley isn't a drag car. You have to tune for how you ride. The condition of the plug should be representative of the type of riding you do and can be done over a period of days or weeks.
Last edited by Juan L; May 25, 2014 at 10:18 AM.
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Joined: Jul 2007
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From: Manassas, VA
And you go everywhere at full throttle all the time? All the links you posted say to do it at the end of run at full throttle because that is what drag cars do. Your Harley isn't a drag car. You have to tune for how you ride. The condition of the plug should be representative of the type of riding you do and can be done over a period of days or weeks.
One of the best descriptions of proper plug reading for the low speed, mid-range and WOT I've seen is HERE.
Last edited by HarleyScuba; May 25, 2014 at 04:14 PM. Reason: nunya
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1st Gear
Joined: Apr 2014
Posts: 5
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From: Montana
spark plug reading
After reading the recent posts, it seems that its still confusing. Tomorrow I'm going to take my bike for a 5 mile, 65 mile an hour ride and and kill it and coast to a stop and see were things are at. Itsnwhat I did 20 yrs ago and it worked then. Of everything I've read on the replies I'm going for the light tan on the porcelain.
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