Fuelling Problem ?

Discussion in 'Bonneville' started by newT120, May 14, 2023.

  1. newT120

    newT120 Active Member

    Apr 1, 2016
    102
    43
    London
    #1 newT120, May 14, 2023
    Hi all,

    Have a little problem with my 2016 T120 that I hope you can help with.

    It has started "fluffing" under acceleration, like when I open the throttle quickly, it bogs down and almost stalls. Closing the throttle down eases the problem. If I open the throttle slowly, then I can accelerate and it holds a steady speed OK, but making overtakes or trying to accelerate quickly is nearly impossible.

    Any ideas what it could be please ?

    Cheers all
     
  2. Pegscraper

    Pegscraper Elite Member

    Jun 12, 2020
    3,429
    800
    Yorkshire
    #2 Pegscraper, May 14, 2023
    This can be symptomatic of the fuelling leaning out and was a common trait of the old slide carbs back in the day. Check for obvious things like air leaks on the intake side of the engine and any loose hoses or wiring connectors. Also check the spark plugs are good with no fouling. Failing that, a diagnostic check on the EFI system may be required.
     
    • Agree Agree x 1
  3. newT120

    newT120 Active Member

    Apr 1, 2016
    102
    43
    London
    #3 newT120, May 23, 2023
    Hi pegscraper - checked the hoses etc. all good. Lifted the plug caps and WD40'd the plug tops. Waited 5 mins then started up. Idled nicely. Took it for a 50 mile run and no problems - just like it never happened !
    Thanks for the advice.
     
    • Informative Informative x 1
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