Carbon/residue on transom
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Carbon/residue on transom

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    tintingsandiego krusn56's Avatar
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    Default Carbon/residue on transom

    The last couple times I have been out I am getting black carbon on the transom. I wiped with my finger and most comes right off. If I fire it up out of the water runs fine. When I first drop in the water, It will smoke a bit and run a tad ruff for a few minutes. Any suggestions....I have a mild 460, performer manif, mallory unilite diz, carter marine fuel pump and holley 750 vac secs which has been rebuilt a couple times by Rick in east co. Most all my parts are new or recent. My compression is around 135 give or take a couple. I might have my carb looked at again but could it be a spark issue. Running ngk gap at 42

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    Sounds like you need a choke adjustment. If you have an electric choke. Turn the key on for30 seconds or so then start the engine. That will tell you if it's too fat.[black smoke]

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    tintingsandiego krusn56's Avatar
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    Quote Originally Posted by Wicked Performance Boats View Post
    Sounds like you need a choke adjustment. If you have an electric choke. Turn the key on for30 seconds or so then start the engine. That will tell you if it's too fat.[black smoke]
    I have a choke but it not wired up...will that matter
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    Quote Originally Posted by krusn56 View Post
    I have a choke but it not wired up...will that matter
    If the choke is in the open or straight up position, it's ok but if it closes any. it will make it run fat. Most people don't have a operating choke on there boat but there's nothing wrong with one that operates correctly.

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    tintingsandiego krusn56's Avatar
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    Quote Originally Posted by Wicked Performance Boats View Post
    If the choke is in the open or straight up position, it's ok but if it closes any. it will make it run fat. Most people don't have a operating choke on there boat but there's nothing wrong with one that operates correctly.
    Would this be the best solution...I will run it later today.
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    Quote Originally Posted by krusn56 View Post
    Would this be the best solution...I will run it later today.
    The best solution is a properly adjusted choke. On an electric choke there is 3 screws holding the black choke housing tight, On the black housing there is a mark[slash] , on the carb parallel to that mark is several hash marks. Move black housing several marks counter clockwise so choke opens sooner. Tighten screws and test start. Sometimes it will take several adjustments to get it right. It must cool down between tests so don't run it long. Hope that helps. Pat

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    tintingsandiego krusn56's Avatar
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    Quote Originally Posted by Wicked Performance Boats View Post
    The best solution is a properly adjusted choke. On an electric choke there is 3 screws holding the black choke housing tight, On the black housing there is a mark[slash] , on the carb parallel to that mark is several hash marks. Move black housing several marks counter clockwise so choke opens sooner. Tighten screws and test start. Sometimes it will take several adjustments to get it right. It must cool down between tests so don't run it long. Hope that helps. Pat
    Will try today...If it isnt in the straight up position and its not wired...Would you suggest removing the choke since I dont use it? Is it poss that it could be something else? Anyway I will look into it and post results. thanx....
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    Quote Originally Posted by krusn56 View Post
    Will try today...If it isnt in the straight up position and its not wired...Would you suggest removing the choke since I dont use it? Is it poss that it could be something else? Anyway I will look into it and post results. thanx....
    If you have no problem starting, and it doesn't run too fat. Just loosen 3 screws and turn choke blade straight up an down and don't worry about it.

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    tintingsandiego krusn56's Avatar
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    Quote Originally Posted by Wicked Performance Boats View Post
    If you have no problem starting, and it doesn't run too fat. Just loosen 3 screws and turn choke blade straight up an down and don't worry about it.
    Checked it out and you were right on....It was closed, so I turned it all the way till there is some tension on it straight up. I pulled my plugs to regap to 35 and they look to clean. Could this be due to the way it was...I have a new marine carter fuel pump thats pumpin out 5.5-6 psi
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    Quote Originally Posted by krusn56 View Post
    Checked it out and you were right on....It was closed, so I turned it all the way till there is some tension on it straight up. I pulled my plugs to regap to 35 and they look to clean. Could this be due to the way it was...I have a new marine carter fuel pump thats pumpin out 5.5-6 psi
    Will look clean. Take it out and run it, check again.

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