2008 1200 GS - Rumbling and popping in the exhaust

Discussion in 'GS Boxers' started by Viajero Perdido, Oct 7, 2012.

  1. Viajero Perdido

    Viajero Perdido ADVwerknonit

    Joined:
    Aug 15, 2008
    Oddometer:
    19
    Location:
    Cypress (Houston), TX
    Recently got a 2008 GS with less than 8k miles. I rode a 2010 GSA several weeks ago on a test ride, and rode a buddy's GS for a short while. But a difference I have noticed on my new GS is when I am decelerating it pops and rumbles in the exhaust. Especially coasting up to a stop in second gear. Usually a pop like a kind of backfire. I don't recall hearing about this before and I didn't experience it with the other GSs I rode. Is this something to be worried about??
    #1
  2. cumminsblue92

    cumminsblue92 Adventurer

    Joined:
    Sep 20, 2011
    Oddometer:
    10
    Location:
    Texas
    As far as I know, its just a characteristic of the boxer engine. I'd say its nothing to worry about.
    #2
  3. Graniteone

    Graniteone 3,2,1...Beer me!

    Joined:
    Jul 25, 2011
    Oddometer:
    551
    Location:
    Golden, Colorado
    If you leave some throttle rolled on while decelerating it is common to hear some pooping / backfiring. If it happens without some throttle added I would consider adjusting the valves. This is just my opinion some one else may know more.
    #3
  4. gjl

    gjl Adventurer

    Joined:
    Jan 2, 2012
    Oddometer:
    25
    Location:
    Southwest Georgia
    I adjusted my valves and the popping you described stopped immediately.
    #4
  5. trc.rhubarb

    trc.rhubarb ZoomSplat!

    Joined:
    Nov 15, 2011
    Oddometer:
    3,000
    Location:
    Concord, CA
    Hmm, I've adjusted my valves a few times now but the popping is always there on my 07
    My HD does it too... compression braking gives me some pops
    #5