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74 Johnson 9.9 spark plug issue
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<blockquote data-quote="Pappy" data-source="post: 351639" data-attributes="member: 3278"><p>Well.....Number one, I don't think that is your issue. As long as the contact on the end of the plug is even close to the coil inside the plug wire boot it should fire. </p><p>Second. You have no power pack on that engine if it is indeed a 1974. </p><p>Check spark. It should be able to bridge at least a 1/4" gap at hand crank speeds. If you think it is the coil (ignition coil not the plug wire coil) simply swap primary wires and secondary wires and see if the problem follows the coil or not.</p></blockquote><p></p>
[QUOTE="Pappy, post: 351639, member: 3278"] Well.....Number one, I don't think that is your issue. As long as the contact on the end of the plug is even close to the coil inside the plug wire boot it should fire. Second. You have no power pack on that engine if it is indeed a 1974. Check spark. It should be able to bridge at least a 1/4" gap at hand crank speeds. If you think it is the coil (ignition coil not the plug wire coil) simply swap primary wires and secondary wires and see if the problem follows the coil or not. [/QUOTE]
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74 Johnson 9.9 spark plug issue
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