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  1. U

    Mercury sport jet 120 hp water in manifold

    I have had problems with this boat for over a year and a half. We thought the bottom carb was getting fuel at first.Than we changed the plugs and coils. I recently found water in the bottom two cylinders and decided to take off the manifold and inspect. Sure enough, there was grey sludge where...
  2. U

    sticky carb needle mercury sport jet 120 hp

    Anyone have any advice why the needle in my top carb sticks and what i can do about it.
  3. U

    baja mercury 120hp sport jet allergic to water

    I have a 1995 mercury sportjet. It has recently had all pistions and rings replaced + all four cyclinders bored out. It starts fine out of the water but starts and dies when in the water. It sounds perfect out but dies when given throttle in the water. The engine was recently timed. Hope for...
  4. U

    baja mercury 120hp sport jet

    I have a 1995 baja mercury sport jet boat that has recently had all four pistons replaced and cyclinder bored out. It will run perfectly on land but dies when put in water. When in the water it will start but then will die out when given the throttle. I am new to boating so I'm looking for some...
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