97 seadoo GTI 717 blubbering
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  1. #1
    PWCToday Newbie
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    97 seadoo GTI 717 blubbering

    So I got this seadoo from a friend of a friend for 400 bucks. Figured wth, if its broke, I'll fix it.

    Anyways, took it out, ran it and it was bogging at high rpms. Like it would go at full throttle then Its like the fuel was being choked off and it would stall. It runs fine at lower rpms and idle.

    Looked on the internet and the shop manual and figured I need to change the gray lines and rebuild the carbs. Did that.

    Now, this is where I may have screwed up. Not sure. Putting the highspeed and low speed screws in the right position. I THINK i did it right but not solid on confidence here. Also when i did the pop off test, I was getting like a weak pop, almost like a leak instead of a pop. But after doing it over and over, I got it popping at the right psi range.

    Now its all rebuilt and I took the ski out, went to higher rpms and it was fine for about 5 minutes. Now it seems to go back and forth from high rpm to low

    bbbbrRRAAAWWWWWWbbbbrRRWAAAAWWWWWWbbbrrraaaaWWWWW

    It doesn't stall, it just doesn't hold high rpms for very long, if I continue to give it gas, the higher rpms will kick in

    After doing a bit of interwebs searching I think someone called this blubbering

    So, if I need to adjust something and anyone knows I'd appreciate it. Thought maybe I'd get vectored in rather than doing the whole thing over, PITA that it was

  2. #2
    PWCToday Guru mrwhipper's Avatar
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    Re: 97 seadoo GTI 717 blubbering

    What do the spark plugs look like? Still seems lean to me. Did you change the fuel selector switch and clean the fuel/water separator?

  3. #3
    PWCToday Guru mrwhipper's Avatar
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    Re: 97 seadoo GTI 717 blubbering

    Could be a crank seal, carb gasket etc. as well. If it is rich, the plugs will be black and possibly wet.

  4. #4
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    Re: 97 seadoo GTI 717 blubbering

    Quote Originally Posted by mrwhipper View Post
    What do the spark plugs look like? Still seems lean to me. Did you change the fuel selector switch and clean the fuel/water separator?
    Thanks, I'll check the plugs, the other helpful poster says theyll look black and wet if its rich.

    Suppose it is rich, what would I do to make it not so rich?

    I didnt change the fuel selector switch, I took it off and cleaned it up then reinstalled it, should I change it

    I'm not sure where the fuel water seperator is. I cleaned the fuel filter, ofcourse it had green goo in it from the old lines.

  5. #5
    PWCToday Guru mrwhipper's Avatar
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    Re: 97 seadoo GTI 717 blubbering

    Quote Originally Posted by je23 View Post
    Thanks, I'll check the plugs, the other helpful poster says theyll look black and wet if its rich.

    Suppose it is rich, what would I do to make it not so rich?

    I didnt change the fuel selector switch, I took it off and cleaned it up then reinstalled it, should I change it

    I'm not sure where the fuel water seperator is. I cleaned the fuel filter, ofcourse it had green goo in it from the old lines.
    The fuel filter is the water separator.

    That is fine that you cleaned the selector. No need to change then.

    High setting on the carbs need to be closed up. If I am not mistaken, they should be all the way closed on that Doo (Highs) I am guessing rich is not the problem though.

    Did you use Mikuni kits or another company's when you rebuilt the carbs. You need to use the Mikuni kits. There is a lot of problems reported with aftermarket kits.
    Last edited by mrwhipper; 12-05-2018 at 04:11 PM.

  6. #6
    PWCToday.com Is My Home Away From Home Grumpy Old Guy's Avatar
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    Re: 97 seadoo GTI 717 blubbering

    You need to replace the fuel selector valve....

    You say you rebuilt the "carbs" the 97 GTI only has one carb.
    Last edited by Grumpy Old Guy; 12-05-2018 at 05:39 PM.

  7. #7
    PWCToday.com Is My Home Away From Home kcr357's Avatar
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    Re: 97 seadoo GTI 717 blubbering

    Did you replace the o-ring in the seat? It's pretty common for them to harden overtime and start leaking. If you didn't remove the carb hold needle closed spray some wd-40 around it and shoot some air into the fuel inlet to check for bubbles
    Last edited by kcr357; 12-05-2018 at 05:54 PM.
    How many gerbils could a gerbil jammer jam if a gerbil jammer could jam gerbils?


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  8. #8
    PWCToday.com Is My Home Away From Home kcr357's Avatar
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    Re: 97 seadoo GTI 717 blubbering

    That isn't blubbering btw.
    And I would replace the fuel valve as well, salt use isn't nice to them.
    CHeck the pulse line for cracks or whatever.
    Replace the oil injection line too, that's a problem area.
    How many gerbils could a gerbil jammer jam if a gerbil jammer could jam gerbils?


    "You build cheater motor's & still get smoked !!!!"
    "Its not your fault. You just don't understand what you're talking about. "

  9. #9
    PWCToday.com Is My Home Away From Home wmazz's Avatar
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    Re: 97 seadoo GTI 717 blubbering

    Quote Originally Posted by kcr357 View Post
    Did you replace the o-ring in the seat? It's pretty common for them to harden overtime and start leaking.
    ++1

    Did you reuse the spring?
    Last edited by wmazz; 12-05-2018 at 06:23 PM.
    Horsepower == Speed, RPM != Speed



  10. #10
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    Re: 97 seadoo GTI 717 blubbering

    i used an aftermarket kit. Now that i've done it once it shouldn't be that big a deal to do it again i guess

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