mcferreira100 Posted June 19, 2014 Posted June 19, 2014 Would like to know from the guys out there how often is it that the plug gap is out of spec? I have never checked the gap as I don`t own a feeler gauge. Should every new plug be checked?
dt502001 Posted June 19, 2014 Posted June 19, 2014 Oh yes they dont come gaped for every application and different gaps make the plug work different.You can get a coin style gap tool for a few bucks,it's a must have tool. durring shipping they can be dammaged ,hence why a brand new plug wont work sometimes. Or the gap can be less if the box has been droped.Don't ever install a plug without checking the gap.Over time the fireing of the plug open's the gap by burning the electrode away ! Any time you install a new plug it should be checked for proper gap as per the bikes requirements,and opening the gap makes the plug hotter, Indexing the plug makes a big difference on how well it works too reseacrch it. They sell shims to properly Index the plug. 1
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