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Thread: ticking sound, right cylinder

  1. #1
    Registered User
    Join Date
    Jun 2012
    Grosse Pointe Park, MI

    ticking sound, right cylinder

    After warm up on my '77 r100, there is a consistent light ticking sound from the right cylinder. Only 18k miles on it and it was completely gone through last year by cert mechanic. Any thoughts?

  2. #2
    Liaison 20774's Avatar
    Join Date
    Sep 2005
    San Antonio, TX
    What does "completely gone through" mean? Can you say what he did? Did he use a mechanics stethoscope to isolate the exact location of the sound?

    My first thoughts would be: valve clearances, rocker arm up/down movement, head gasket installed backwards.
    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!

  3. #3
    Registered User ebeeby's Avatar
    Join Date
    Mar 2003
    McKinney, Texas
    If there is no "slight ticking" from BOTH cylinders of my R75/5 - I'm in trouble.....

  4. #4
    Polarbear Polarbear's Avatar
    Join Date
    Jan 2006

    Same bike;

    R100'78 here too and its most probably the tappets slightly looser on that one side. NO big deal, as one mentioned already. Its good to hear this. An easy check, however with valve cover off. Randy

  5. #5
    Sir Darby Darryl Cainey's Avatar
    Join Date
    Mar 2003
    Fenwick, Ontario Canada
    Loud valves are happy valves

    You should check the other side!
    Ambassador BMW MOA Ontario Canada
    President Niagara BMW Riders #298
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    1977 R100RS, (Retired) 1993 R100GS (just getting started)

  6. #6
    Pistol Shooter headhog's Avatar
    Join Date
    Jan 2011
    Farmville, VA
    Quote Originally Posted by Darryl Cainey View Post
    Loud valves are happy valves

    You should check the other side!
    I recently acquired a 1994 R100R that was in storage for 7 years. When I heard it run the left cylinder was ticking nicely, but the right was fairly quiet. Checking both cylinders clearance I found the left intake spot on and the exhaust a little tight. The right cylinder, the quiet one, was tight on the exhaust but the intake had almost zero clearance. After adjustment both sides are now ticking like a Swiss watch.

    Tappy is Happy!
    MSF Instructor
    1992 R100GS
    1994 R100R Mystic
    2007 Harley Electra Glide Classic

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