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Thread: 1978 r100rs won't start

  1. #16
    Liaison 20774's Avatar
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    Quote Originally Posted by jsey View Post
    The only odd thing about these carbs is the the idle mixture screw is located inside the float bowl making adjustment during running impossible. Makes no sense to me
    Yeah, makes no sense. Never heard such a thing. Maybe the item you're looking at isn't really a mixture screw??? It has to be on the outside.
    Kurt -- Forum Liaison ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  2. #17
    #13338 PGlaves's Avatar
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    Quote Originally Posted by 20774 View Post
    Yeah, makes no sense. Never heard such a thing. Maybe the item you're looking at isn't really a mixture screw??? It has to be on the outside.
    I agree. We need a picture. I think it is the idle jet.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://web.bigbend.net/~glaves/

  3. #18
    Fortis Fortuna Adiuvat Omega Man's Avatar
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    "You can do good or you can do well. Sooner or later they make you choose". MI5
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    2009 F800GS 1994 TW200

  4. #19
    Quote Originally Posted by Omega Man View Post
    Iíll attach a photo in the morning

  5. #20
    MOA #24991 Pauls1150's Avatar
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    Brook has THE photo on his website (link above).

    Copied here: Brook's Photo.doc

    Idle mixture is the big silver screw with its slot shown "horizontal"... on the outside, underneath, inboard of the throttle return spring.

  6. #21
    Liaison 20774's Avatar
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    Here's Paul's picture:

    CarbScrew.jpg
    Kurt -- Forum Liaison ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  7. #22
    Registered User STEVENRANKIN's Avatar
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    Good

    Old age does things like this. I am surprised the bike ran last season with so much messed up in the carbs. St.

  8. #23
    I'm equally surprised. It's weird how things like this will happen while just sitting. Thanks everyone for your help. Don't ask me what what I was thinking or saw but the idle mixture screw was right where it was supposed to be when I looked this morning LOL. Duh!

  9. #24
    Registered User STEVENRANKIN's Avatar
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    Seeing

    Do you know how many times the wife has saved me from vicious salad dressing about to attack me that was hiding right in front of my face in the fridge. LOL. St.

  10. #25
    MOA #24991 Pauls1150's Avatar
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    Where's that danged tool? Oh, in my back pocket!
    Where's that danged screw I just dropped? Oh, I'm sitting on it!
    Beardog, bring that back here!

    (I fess up to all of the above, more than once...)
    Last edited by Pauls1150; 09-27-2023 at 06:35 PM. Reason: added fessup

  11. #26
    It's up and running! Thanks again everyone for the advise

  12. #27
    Registered User STEVENRANKIN's Avatar
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    Just out of curiosity

    Just out of curiosity, how long had it been sitting? How many miles on it? St.

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