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My petcock threw up—!

Discussion in 'The Garage' started by Vermont4me, May 13, 2023.

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  1. May 20, 2023 #21
    Vermont4me

    Vermont4me XS400 Member

    21
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    Hartford, CT

    Hello my friend- I’m in ‘carb hell’…so the first set of carbs had a hole in the float, sent them back..second set I snagged ($150) is absolutely frozen, I mean frozen- so I may have to send that one back too- what would you do if you were me (again, not super mechanically inclined…)- someone has a listing for 100% rebuilt and blasted etc carbs for $399 I think it is- I’m so frustrated maybe I should have done this at the get go- needing help in Hartford! Lol
     
    Vermont4me, May 20, 2023
    Vermont4me, May 20, 2023
    #21
  2. May 20, 2023 #22
    Vermont4me

    Vermont4me XS400 Member

    21
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    3
    Hartford, CT
    Last question- with a capped vacuum hose on my 81xs- will gas flow naturally if it’s not running? Maybe that’s why gas kept pouring out of the carbs as I’m standing there- oh if I only knew…
     
    Vermont4me, May 20, 2023
    Vermont4me, May 20, 2023
    #22
  3. May 20, 2023 #23
    tstidham

    tstidham XS400 Addict

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    65
    28
    Philadelphia, PA
    Not if the float, needle and seat are functioning properly inside the carbs. Whether you have a mechanical or vacuum petcock, there will always be fuel in the fuel line from the petcock to the carb.
     
    tstidham, May 20, 2023
    tstidham, May 20, 2023
    #23
    Vermont4me likes this.
  4. May 21, 2023 #24
    CaptChrome

    CaptChrome XS400 Addict Top Contributor

    317
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    43
    Southern NJ
    Maybe a little late, but....

    I did find a source for new Mikuni floats (genuine Mikuni too!). That is Sudco International in California. I don't know the pricing, but here is the relevant info on them:
    Brass float is Sudco part # 002-114
    Plastic float is Sudco part # 007-727

    They look to be a veritable one-stop-shop for everything Mikuni.
     
    CaptChrome, May 21, 2023
    CaptChrome, May 21, 2023
    #24
    Vermont4me and tstidham like this.
  5. May 22, 2023 #25
    Vermont4me

    Vermont4me XS400 Member

    21
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    3
    Hartford, CT
     
    Vermont4me, May 22, 2023
    Vermont4me, May 22, 2023
    #25
  6. May 22, 2023 #26
    Vermont4me

    Vermont4me XS400 Member

    21
    2
    3
    Hartford, CT
    thanks guys- I had a sick kind of realization this am (maybe)- so I’ll pose my thought in a question…

    I capped the vacuum line on the engine but DIDNT cap it in the carbs- would this be why gas would continue to pour out if the carbs? I’m thinking I answered my own question….please let me know your thoughts!
     
    Vermont4me, May 22, 2023
    Vermont4me, May 22, 2023
    #26
  7. May 22, 2023 #27
    tstidham

    tstidham XS400 Addict

    164
    65
    28
    Philadelphia, PA
    If they are factory carbs, there isn't anything to cap. Only the two vacuum ports on the carb holders. If fuel is leaking, either the float level is wrong, the needle or seat is worn or the float is sinking due to holes. When I rebuilt my carbs, I had a leak only while on the side stand out of the left carb. I found my seat was worn and ordered two new ones from mikesxs.
     
    tstidham, May 22, 2023
    tstidham, May 22, 2023
    #27
  8. May 22, 2023 #28
    Vermont4me

    Vermont4me XS400 Member

    21
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    Hartford, CT
    Definitely the holes then- thx and appreciate you
     
    Vermont4me, May 22, 2023
    Vermont4me, May 22, 2023
    #28
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