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  1. #1

    What is this hole in my GTI manifold?

    I notice that there is a hole in my GTI manifold. My other GTI has had the same hole plugged up with some sort of epoxy. What is this hole for and should I cover it with something (suggestions please)? Also would this allow oil to leak in to the hull? I ask because this ski has a problem with oil getting in the hull.

    I placed a red box around the hole.
    Click image for larger version. 

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  2. #2
    SELF27's Avatar
    Join Date
    May 2013
    Austin, TX
    its a freeze plug/hole from casting pipe. common for them to leak. just weld up or epoxy.

  3. #3
    Like JB Weld?

  4. #4
    shui's Avatar
    Join Date
    Apr 2011
    Montreal, Canada
    What year ski is this? Makes me want to check out mine for something like this..

  5. #5
    This is how I run a jetski shop in the desert nmpeter's Avatar
    Join Date
    May 2008
    Elephant Butte New Mexico
    this is a very common fault on Seadoo 717 and 787 skis all years. Haven't seen one on a 951 ever., Really increased around here two or three years ago.. sand and crap catch around the bung and cause corrosion. Needs to be taken care of as in some instances it sprays water onto the stator connection when it leaks.

    Welding and pressure test expect to pay $75 @ my shop or any commercial welder, the pipe is double walled, so if you opt to use epoxy, you want to make an effective patch, not dump a 1/2 pint into the area. I have the pipes pressure tested.while optional, it's advisable, especially for salt water riders

    I've seen the upper and lower rust if you have one leaker, be sure to check the other one closely.

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