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    1978 Johnson 140

    My johnson still wont run...<br />As per my last post i have gone through the carbs new plugs new fuel lines but under a load and when motor warms up i lose power.and then motor back fires and runs like its out of time.Any ideas Open to anything....
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    no power under load

    thanks for all the responses to johnson without power found a few things to work on fuel vent and so forth.now under a load is when i lose power with the boat out of the water and muffs on i get good idel rpms at wot are good but not under a load. i am cleaning out the carbs tonight and should...
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    johnson with no power lol

    I have a 78 140 johnson and the boat is new to me sat for 2 years. when i go out on the water it will jump up and plain and then i lose power.i have changed plugs,new fuel lines filter and hand pump.cleaned out the carbs with carb cleaner but no change.could it be the coil? please help first...
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