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Help Needed. 1989 Johnson 25 hp converted to a 30/35 HP
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<blockquote data-quote="sr522re" data-source="post: 429157" data-attributes="member: 15906"><p>Just a quick update:</p><p></p><p>So I adjusted the throttle cable out more and moved the throttle stop idle screw inwards allowing the motor to rev a little higher. Then I was able to richen the carb at idle with the idle mixture screw which brought the revs back down. The sneeze seemed to go away at idle which I think is good. However, now when I rev the engine a little higher the sneeze comes back. Please see the youtube link if you want to see what I am talking about. </p><p></p><p>https://youtu.be/NuVtRQwVLKI </p><p></p><p>Two things that now have me a little confused is, when watching the video, the motor runs clean at idle, no smoke, but when I rev it just a little bit and the sneeze begins to occur the motor starts to smoke along with the sneezing. And one last piece to the puzzle which may or may not be related, I am losing my fuel prime if I let the motor sit for more than a few minutes. I have to pump the primer ball a few times before the motor will start again after I let it sit. Perhaps there is an air leak in the fuel line which is allowing me to lose prime as well as allowing for the lean condition?</p><p></p><p>Thoughts? Any input is always appreciated.</p><p></p><p>Thank you!</p></blockquote><p></p>
[QUOTE="sr522re, post: 429157, member: 15906"] Just a quick update: So I adjusted the throttle cable out more and moved the throttle stop idle screw inwards allowing the motor to rev a little higher. Then I was able to richen the carb at idle with the idle mixture screw which brought the revs back down. The sneeze seemed to go away at idle which I think is good. However, now when I rev the engine a little higher the sneeze comes back. Please see the youtube link if you want to see what I am talking about. https://youtu.be/NuVtRQwVLKI Two things that now have me a little confused is, when watching the video, the motor runs clean at idle, no smoke, but when I rev it just a little bit and the sneeze begins to occur the motor starts to smoke along with the sneezing. And one last piece to the puzzle which may or may not be related, I am losing my fuel prime if I let the motor sit for more than a few minutes. I have to pump the primer ball a few times before the motor will start again after I let it sit. Perhaps there is an air leak in the fuel line which is allowing me to lose prime as well as allowing for the lean condition? Thoughts? Any input is always appreciated. Thank you! [/QUOTE]
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Help Needed. 1989 Johnson 25 hp converted to a 30/35 HP
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