SBT Jetski Engines, Parts & Accessories

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  1. #1
    Joined
    May 2017
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    Illinois
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    9

    Default 1998 ts 770 tigershark, geting to much feul

    i have a 1998 tigershark 770 and it seems to be geting to much fuel,

    SYMPTONS: starts fine,idles fine,runs good up to 1/8 throttle then from there to full throttle it seems like its geting held back and wont go any faster or clear out. its not a bog just seems like its flooding out, if i turn fuel to off it rips good for a few seconds till it needs fuel again then i turn it back on and it back to the same problem,

    THINGS IVE DONE SO FAR.
    took off carbs and cleaned/inspected them
    set to stock settings
    hose clamped and checked all fuel lines
    changed spark plugs
    drained fuel and put fresh fuel in

    and the first time i took it out after doin all this i forgot the fuel restricter (looks like a little brass jet) that goes in the fuel line from the accelerator pump to the carb on the pto side carb and it ran worse in lower rpms but got up to higher rpms and higher speeds without the resticter (brass jet thing that goes in fuel line from pump to carb)
    now that i put it back in it runs great at idle to 1/8 throttle but then just seems like its flooding out and cant burn fuel off till i turn gas off then it rips for a few seconds then it burns off all the fule then i need to turn gas back on then it goes back to the same thing.
    thanks for any help and advise.
    if some one can find a fuel line routing diagram that would be much appreciated also.
    Last edited by Yamahafan#1; 06-02-2017 at 01:16 AM.

  2. #2
    Joined
    May 2017
    From
    Illinois
    Posts
    9

    Default Re: 1998 ts 770 tigershark, geting to much feul

    hello??? any one home???

  3. #3
    Joined
    Jun 2016
    From
    Clearwater, Florida
    Posts
    279

    Default Re: 1998 ts 770 tigershark, geting to much feul

    You can take a look at the parts diagrams here[CountryCat.com], maybe that will help.
    The service manual I have is for a 1997 and it does not show a diagram.
    CountryCat.com
    Last edited by SBT-Tech 1; 06-06-2017 at 08:47 AM.

  4. #4
    Joined
    May 2017
    From
    Illinois
    Posts
    9

    Default Re: 1998 ts 770 tigershark, geting to much feul

    thanks for the reply

  5. #5
    Joined
    May 2017
    From
    Illinois
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    9

    Default Re: 1998 ts 770 tigershark, geting to much feul

    Still cant figure out why im having this problem guys.

  6. #6
    Joined
    Jun 2016
    From
    Clearwater, Florida
    Posts
    279

    Default Re: 1998 ts 770 tigershark, geting to much feul

    It sounds like your needle and seat are leaking.
    When you set everything to stock settings, what was the pop off pressure?

  7. #7
    Joined
    May 2017
    From
    Illinois
    Posts
    9

    Default Re: 1998 ts 770 tigershark, geting to much feul

    i didnt set it because i was told that it only effects idle to 8th throttle. and it runs great in that throttle range

  8. #8
    Joined
    May 2017
    From
    Illinois
    Posts
    9

    Default Re: 1998 ts 770 tigershark, geting to much feul

    Is this true

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