Can I Block Fuel Injectors on Sea-Doo 3D?

The fuel injectors on the Sea-Doo 3D are blocked as part of the engine's pressure pressurization test. This test is required by the maintenance schedule after the first 10 hours of operation. After that, the schedule requires it after every 100 hours of operation. The fuel pressurization test checks the condition of the relief valve and the fuel outlet, and allows you to check the rest of the fuel system for leaks.

  1. Blocking the Injectors

    • The pressure test is designed to tell you the location of any leaks in your fuel system. By isolating the injectors -- blocking them -- you can pressurize the fuel delivery system in your Sea-Doo and look for a spray of fuel, rather than a lead that weeps fuel from the lines or components.

    The Tester Kit

    • The process begins with a full fuel tank, to provide optimum pressure throughout the system. Then, you block things off by installing a hose pincher on the fuel line that feeds the injectors. This is followed by attaching the pump gauge tester -- found in the Sea-Doo Engine Leak Tester Kit -- to the air inlet fitting. The Engine Leak Tester Kit, Bomabardier Part Number 295 000 076, is available from any Bombardier dealer.

    Starting the Process

    • All you have to do then is install the safety lanyard to the emergency stop switch, and turn the ignition key to the "On" position. This starts the high-pressure fuel pump that, in turn, pressurizes the entire fuel system. At this point, you begin your inspection of the various hoses, the pumps and every other part of the fuel system -- by tracing the route of the fuel from the fuel tank to the injector.

    The Inspection

    • Not only do you inspect the joints between components, you inspect the hoses and the components themselves, since each is a potential trouble source. The pressurized system will shoot fuel out of any breach in the system like a champagne from a bottle opened by an amateur.

    The Test Results

    • Leave the system pressurized for 10 minutes, at 5 psi -- watch the pressure gauge you attached earlier. If you find no other leaks, yet see the pressure dropping steadily, the relief valve and the fittings are not blocked, which they should be, by the pressure. This means one or the other, or both, require replacement.

Related Searches


  • Sea-Doo Shop Manual 2004 - G TI, GTI LE, GTI RFI, GTI LE RFI, XP DI, GTX 4-TEC, RXP 4-TEC (6113/6134/6135/6136/6137/6138/6139/6140/6147/6148/ 6142/6141/6143/6144/6149/6150/6115/5599/6162/6163/6151/6152)
  • Sea-Doo 3D RFI Supplement 2004
  • Photo Credit Images

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