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    1974 70hp oil in water?

    I have a 1974 70esl74, Would run on ears but not when under water, cleaned and rebuilt carbs, changed plugs, fuel filter screen and fuel pump cap and gasket. Fired up after a few tries and stayed idling in the tank. I have an original omc service and parts manual and turned it off after a few...
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    fuel pump 1974 70 hp johnson

    I have been working for the past few months trying to get this engine running. I ordered an oem manual and set about rebuilding the carbs with new floats and needle valves and seats, blew everything out with compressed air, all passages are clear. decided while I was at it to replace fuel pump...
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    74 johnson 70hp will not stay running in lake

    Engine fires up immediately in back yard with muffs on and stays running untill either I turn key off or if I push throttle lever all the way down. It will always start back up quickly. The bottom carb throttle lever has a little bit of play to it and mechanic told me it will have a rough idle...
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    recent purchase

    I recently bought an older starcraft aluminum boat with a 1974 johnson 70 hp sea horse. It has been used(running within the pasy 12 months but sat for a while as result of divorce. Once home, got the battery charge and engine spins, bottom plug getting wet, middle and top plugs are not, also...
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