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FJR Motorcycle Forums
Technical & Mechanical Problems
Dual Platinum Spark Plugs
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<blockquote data-quote="Fred W" data-source="post: 1149715" data-attributes="member: 3828"><p>And it is almost right. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> Electrons flow from negative to positive. (Hole flow theory is pretty outdated)</p><p></p><p>Other than the polarities shown at the coil secondary being reversed, this diagram is otherwise correct.</p><p></p><p>As for the big three automakers having used wasted spark in the past, that is (sadly) true. My 5.0L V8 Exploder had a wasted spark design. It called for double platinum plugs (both electrodes were platinum) and still the plugs never lasted 100k miles.</p><p></p><p>Nowadays, Coil Over Plug (COP) is all the rage, and this is what we now have in the 2013+ FJRs. Every plug fires in the normal direction, so iridiums would be beneficial on a 3rd gen FJR.</p></blockquote><p></p>
[QUOTE="Fred W, post: 1149715, member: 3828"] And it is almost right. ;) Electrons flow from negative to positive. (Hole flow theory is pretty outdated) Other than the polarities shown at the coil secondary being reversed, this diagram is otherwise correct. As for the big three automakers having used wasted spark in the past, that is (sadly) true. My 5.0L V8 Exploder had a wasted spark design. It called for double platinum plugs (both electrodes were platinum) and still the plugs never lasted 100k miles. Nowadays, Coil Over Plug (COP) is all the rage, and this is what we now have in the 2013+ FJRs. Every plug fires in the normal direction, so iridiums would be beneficial on a 3rd gen FJR. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Dual Platinum Spark Plugs
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