Popping And Banging Exhaust

Discussion in 'Bonneville' started by Reg Thomas, Jul 10, 2023.

  1. Reg Thomas

    Reg Thomas New Member

    Feb 26, 2023
    5
    3
    Oxfordshire
    #1 Reg Thomas, Jul 10, 2023
    Hi all just bought a 2011 Triumph Bonneville SE. When out riding and decelerating the exhaust pops and bangs is this normal, its all stock as far as i can see Cheers all.
     
  2. Traveler

    Traveler Well-Known Member

    Jun 21, 2023
    149
    93
    Helena, Sweet Home Alabama
    #2 Traveler, Jul 10, 2023
    If the pipes are stock then I'd guess the carbs need to be re-jetted. The condition you describe makes me think the engine is running lean.
     
  3. Reg Thomas

    Reg Thomas New Member

    Feb 26, 2023
    5
    3
    Oxfordshire
    #3 Reg Thomas, Jul 10, 2023
    Its Efi :)
     
  4. bruno_c

    bruno_c New Member

    Oct 19, 2018
    16
    3
    France
    #4 bruno_c, Jul 10, 2023
    I suggest to block the air injection system (AIS) if there is still one on your bike.
     
  5. Traveler

    Traveler Well-Known Member

    Jun 21, 2023
    149
    93
    Helena, Sweet Home Alabama
    #5 Traveler, Jul 10, 2023
    Thought it was a carb unit. Sorry
     
  6. Pegscraper

    Pegscraper Elite Member

    Jun 12, 2020
    3,338
    800
    Yorkshire
    #6 Pegscraper, Jul 10, 2023
    A leak on the exhaust system before the silencer(s) can also cause this. Check for loose exhaust fittings/clamps etc.
     
    • Agree Agree x 1
  7. MightyBoosh

    MightyBoosh Active Member

    Mar 29, 2023
    146
    43
    Uk
    #7 MightyBoosh, Jul 11, 2023
    Last edited: Jul 11, 2023
    It's normal. As has been said, SAI removal will pretty much stop it.

     
  8. steve lovatt

    steve lovatt Something else

    May 12, 2014
    9,220
    1,000
    North Yorkshire
    #8 steve lovatt, Jul 11, 2023
    Had a 2012 SE, which was stock when bought but it never popped and banged with standard exhaust.
     
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