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1974 Evinrude 25Hp Plug Question
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<blockquote data-quote="Weldorthemagnificent" data-source="post: 435205" data-attributes="member: 22139"><p>Both brand and heat range. I had a 20 that didn't want to idle/troll very long without loading up and fouling. The previous owner had selected ngk in a higher heat range. I read up on the subject and put a pair of 4J's in it and presto, it ran great. It's unexplainable to me but others have had similar experiences. Ngk makes a fine plug, and are in most of my small engines. But my johnnyrudes get factory spec plugs now. </p><p></p><p></p><p>Sent from my iPhone using Tapatalk</p></blockquote><p></p>
[QUOTE="Weldorthemagnificent, post: 435205, member: 22139"] Both brand and heat range. I had a 20 that didn't want to idle/troll very long without loading up and fouling. The previous owner had selected ngk in a higher heat range. I read up on the subject and put a pair of 4J's in it and presto, it ran great. It's unexplainable to me but others have had similar experiences. Ngk makes a fine plug, and are in most of my small engines. But my johnnyrudes get factory spec plugs now. Sent from my iPhone using Tapatalk [/QUOTE]
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1974 Evinrude 25Hp Plug Question
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