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  1. #1
    Kenway's Avatar
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    '97 XP high speed jet size.

    While cleaning the carbs on my used sea doo Xp, I noticed that the high speed jet on the pto carb is 167.5, and the carb on the mag side is 162.5.
    Does anyone know what size jet is stock for this ski ? Or is there a reason for this difference.


  2. #2
    surferd15's Avatar
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    Thats stock. Rear carb needs more fuel to prevent seizure.

  3. #3
    Kenway's Avatar
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    Thanks for your reply. I didn't know that. I figured someone had put an odd size jet in. I'm fighting with a possible lean condition that is causing me to pull the choke on about half way for the engine to respond to throttle. It idles fine even with the choke fully open, but as soon as you hit the throttle it almost shuts off. Checked the plugs and they are looking almost white.

  4. #4
    Kenway's Avatar
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    Still no luck. Installed OEM springs and checked pop off pressure. Needle is popping off at around 35 psi. Needle set is 1.5
    Fuel is now getting to the carbs but not to the cylinders. I can now only start the engine by priming the cylinder direct. Once the prime is burned, the engine shuts down again.
    All carb ports are clear, and carbs are clean.
    Any help at this point would by very welcomed. Starting to regret even purchasing this one.

  5. #5

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    I assume you the fuel selector switch to on and do not have grey tempo fuel lines... Also I would check the fuel filter.

  6. #6
    Kenway's Avatar
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    The fuel selector was selected to both ON and Res. The fuel filter was also removed and cleaned. All my tempo hoses have been replaced. I disassembled the carbs again and found that the seat of the fuel pump check valve was not flat and true. Possible damage from the pump cover being installed incorrect at one time, causing the dowel pin to come into contact with the valve seat. I should have a new pump today from the dealer. Plus I installed rebuild kits in both carbs.

  7. #7
    Kenway's Avatar
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    Installed the new pump, but it would only burn the prime. Placed the fuel filter on it's side and it started right up. Installed an inline fuel filter in place of the factory bowl type filter and it starts everytime now. Had it out for a run and all fuel problems are gone.

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