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  1. A

    1979 15hp johnson , runs out of fuel at high speed

    Have rebuilt carb,replaced fuel pump and all fuel lines including bulb. Trolls great all day long. But will not run at high speed. IT helps to pump the bulb? After market plastic tank. Do they have a filter screen in them? I see no way into the tank? any help appreciated.
  2. A

    15hp johnson fuei pump

    Have another question. What makes the fuel pump work on a 15hp Johnson? just the vacuum from the fuel flow?? Thanks.
  3. A

    15 hp johnson fuel pressure 1979

    When trolling with a 1979 15hp Johnson outboard, Should the fuel line primer bulb have pressure in it? How is the best way to check the fuel pump? thanks.
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