91 carb/petcock
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Thread: 91 carb/petcock

  1. #1
    Senior Member FnMag's Avatar
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    Leaking fuel from one of the orifices below carb even when petcock is in off position. Should just need to replace seals, yes ?



    If so, drain tank first before replacing seals?



    Or is it stuck float?



    Thanks.

  2. #2
    Senior Member jbfla's Avatar
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    Likely more than one problem.



    If fuel is continually flowing out the overflow drain, even with the petcock off:



    a: petcock is leaking (see this post by Broken Veteran}:



    https://tw200forum.com/forums/85249/ShowPost.aspx



    b: float valve needle is not closing (because of wear, crud build up, or float is bad or maladjusted.

    c: o-ring on the float valve seat is old, dried out, or worn, and fuel is leaking around it.



    jb
    2018 Triumph Street Twin..............2016 CB500F
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  3. #3
    Senior Member AFISHALBIZ's Avatar
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    Quote Originally Posted by Mike View Post
    Leaking fuel from one of the orifices below carb even when petcock is in off position. Should just need to replace seals, yes ?



    If so, drain tank first before replacing seals?



    Or is it stuck float?



    Thanks.
    Pull off your fuel line going to the carb. with the petcock off. If gas flows , PETCOCK problem.. Id buy a new one for $19 unless you can find a gasket kit MUCH cheaper.. If thats not the problem , snap your throttle from wide to off a few times ,,, sometimes that'll seat things.. You could "tap" the carb. bowl a bit with a non mettalic tapper... Screwdriver handle works..If you are still leaking , pull the bowl and replace the float bowl seat.. You could try to clean it a bit before you spend the $4...

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  5. #4
    Senior Member FnMag's Avatar
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    I'll check with the fuel line first since I've just bought replacement line and have been meaning to do it for a week now. I'll also drop the bowl and clean. Currently have 3/4 tank left that has seafoam in it.



    I'll go ahead and order a new float valve seat and needle too. Maybe u can get it here before my next day off.



    Thanks guys!

  6. #5
    Senior Member FnMag's Avatar
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    Can't figure out which part is float needle on rockymtnatv site.



    Help!!

  7. #6
    Senior Member Ayers Garage's Avatar
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    Needle valve set comes as a kit with the needle, seat, and o-ring under part number 2JX-14107-00-00. You're looking at part number 17 on the carburetor microfiche. It also shows in stock too. Price is 16.87.

  8. #7
    Senior Member FnMag's Avatar
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    Thanks. Have it, new float bowl gasket, float pin and petcock on the way.

  9. #8
    Senior Member n2o2diver's Avatar
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    If you need help Mike let me know.
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  10. #9
    Senior Member FnMag's Avatar
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    Will do n202, I have a doctors appt thurs at 1 so I'm going to try that morning if I can get motivated. If not, I'm off Sunday if you want to come by or I can ride up there. We REALLY need to go exploring together and talk TDubs. Do you still have my #??



    Mike

  11. #10
    Senior Member n2o2diver's Avatar
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    Pm it to me just in case I don't. I can meet you Sunday.
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