How to Troubleshoot a Sea-Doo GSX

Bombardier's Sea-Doo GSX jet-ski is propelled using an engine that's coupled to a drive shaft that turns an impeller. The impeller pulls water up from under the jet-ski and sends it to a venturi. The venturi speeds up the water and creates thrust. The thrust propels the watercraft through the water. When you increase the engine speed, it increases the water thrust, and consequently the overall speed. As with many vessels, water also is used for cooling. Problems with the Sea-Doo GSX can be related to these areas.

Things You'll Need

  • Rags
  • Socket wrench set
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Instructions

    • 1

      Stop the engine immediately if the engine overheating beep sounds --- it's a continuous beep alarm --- and perform the jet pump water intake and impeller cleaning. Rock the vessel several times while pressing the "Start/Stop" button repeatedly to get rid of weeds from the intake. Don't start the engine while you're doing this. Then start the engine and perform a visual check of water expulsion from the bleed outlets. Repeat if the cooling system is still blocked.

    • 2

      Remove the spark plugs with a socket wrench if the watercraft became submerged or partially submerged, and the engine won't start. Stuff rags in the holes, and then crank the engine. This will remove any accumulated water. Then dry the plugs thoroughly --- lay them in the sun for a while if you can --- and replace them. Start the vessel normally, and have the vessel serviced as soon as possible.

    • 3

      Pull the choke lever with your right hand, and press the "Start/Stop" button if the Sea-Doo won't start and it's cold. Verify that the fuel valve is in the "On" position.