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Plug question, '71 evinrude 25hp
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<blockquote data-quote="bigtroutpa" data-source="post: 157385" data-attributes="member: 3711"><p>Hi</p><p>Those plugs will be way too hot for this motor...I have the same motor in a 69 Johnson version.</p><p>I know all the plug site list this plug but the OMC listing for this motor is for a J4C with an optional listing for a hotter J6C. Do not use resistor plugs. </p><p></p><p>Basically as explained to me by an OMC cert mechanic...if you do alot of wide open throttle running then use the J4C and if u are slow running as in trolling quite a bit then use the hotter J6C. I think the plugs you got would be too hot and may cause damage with alot of wide open throttle running. </p><p></p><p>I use the J4C and they run perfect brown color with alot of mixed running speeds...found the plugs for cheap at autozone.</p></blockquote><p></p>
[QUOTE="bigtroutpa, post: 157385, member: 3711"] Hi Those plugs will be way too hot for this motor...I have the same motor in a 69 Johnson version. I know all the plug site list this plug but the OMC listing for this motor is for a J4C with an optional listing for a hotter J6C. Do not use resistor plugs. Basically as explained to me by an OMC cert mechanic...if you do alot of wide open throttle running then use the J4C and if u are slow running as in trolling quite a bit then use the hotter J6C. I think the plugs you got would be too hot and may cause damage with alot of wide open throttle running. I use the J4C and they run perfect brown color with alot of mixed running speeds...found the plugs for cheap at autozone. [/QUOTE]
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Plug question, '71 evinrude 25hp
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