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Engine slows then dies at WOT- 1960 18hp Johnson Seahorse
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<blockquote data-quote="who pooted?" data-source="post: 273964" data-attributes="member: 940"><p>First off let me say thanks to everyone. Now to answer some questions:</p><p>Pappy- I've been running 50:1 on that engine for the last 8 years. That was told to me by one of the trusted mechanics at the Art's Marine here in North Little Rock, AR. Although, I would be more than willing to experiment with the oil ratio. </p><p> My throttle does not have a spring back, stays in whatever position of throttle i turn it to. It will usually begin to decelerate after running WOT for about two minutes, then will slowly decrease in speed. The throttle position does not change i've got it wide open. Once the motor does finally die it is not with a surge, it's more like how an engine dies when it's flooding. As for compression i plan on checking it this weekend time permitting.</p><p> She's spitting water fine at WOT, I changed the LU oil and it was still good in color although it did seem to be a bit cloudy, plugs are not black they are more light brown in color. I will have to check the cylinder head next time i'm out. As for coils, what is a way to tell if they have gone bad? I do fancy myself to be somewhat mechanically inclined, but I've been reluctant to tear apart my boat motor. I do have the original repair manual for reference.</p><p></p><p>Thanks for all your help,</p><p>Adam</p></blockquote><p></p>
[QUOTE="who pooted?, post: 273964, member: 940"] First off let me say thanks to everyone. Now to answer some questions: Pappy- I've been running 50:1 on that engine for the last 8 years. That was told to me by one of the trusted mechanics at the Art's Marine here in North Little Rock, AR. Although, I would be more than willing to experiment with the oil ratio. My throttle does not have a spring back, stays in whatever position of throttle i turn it to. It will usually begin to decelerate after running WOT for about two minutes, then will slowly decrease in speed. The throttle position does not change i've got it wide open. Once the motor does finally die it is not with a surge, it's more like how an engine dies when it's flooding. As for compression i plan on checking it this weekend time permitting. She's spitting water fine at WOT, I changed the LU oil and it was still good in color although it did seem to be a bit cloudy, plugs are not black they are more light brown in color. I will have to check the cylinder head next time i'm out. As for coils, what is a way to tell if they have gone bad? I do fancy myself to be somewhat mechanically inclined, but I've been reluctant to tear apart my boat motor. I do have the original repair manual for reference. Thanks for all your help, Adam [/QUOTE]
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Engine slows then dies at WOT- 1960 18hp Johnson Seahorse
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