Bonneville Dry Plugs

Discussion in 'Newbies Hangout' started by Chas83, Dec 24, 2025.

  1. Chas83

    Chas83 New Member

    Dec 24, 2025
    0
    0
    Wales
    Hey guys and girls.

    I've got a 2016 T120 and a 2010 Bonneville se.

    I'm having some issues with the se.

    It was sat for 9 years. We flushed the tank and she started straight away. After a 10 mins run we stopped her and did a service so new plugs, oil and air filter. I also took out the neutral switch as she was leaking and renewed the washer. She's still leaking so a new switch is called for there.
    Now the bike won't start. There is spark but the plugs are dry.

    I took the tank apart and put a new filter in and tested that she's priming.

    Any ideas what's happened or how to get her going?

    Thanks

    Chas
     
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  2. Mrs Visor

    Mrs Visor Crème de la Crème

    Aug 21, 2021
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    Hi and welcome, hopefully someone will be able to help you!
     
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  3. joe mc donald

    Subscriber

    Dec 26, 2014
    15,691
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    slough / burnham
    @Chas83 Welcome to the family. Seems you went the wrong route. If there was any crud in the fuel it will be in the carbs and blocked them so a strip and complete clean will be needed. Do tap the upload a file button bottom right corner and show us all the bikes.
     
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  4. Boothman

    Boothman Elite Member

    Jul 26, 2023
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    Hi and welcome to the forum :cool:
     
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  5. Helmut Visor

    Helmut Visor Only dead fish go with the flow
    Subscriber

    Oct 3, 2018
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    Hi Chas :cool:
     
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  6. Bikerman

    Bikerman Life's not a dress rehearsal.
    Subscriber

    Oct 29, 2014
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    Greetings from Lincolnshire.
     
  7. Wessa

    Wessa Cruising

    Apr 27, 2016
    11,861
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    Hi and welcome….
     
  8. Kinjane

    Kinjane Well-Known Member

    Oct 15, 2017
    345
    63
    Bristol, Land of Enger
    Can’t remember 15yrs ago if the fuel made it passed the injectors on mine if any of the safety interlocks were active, but from your post it might be worth checking the new Neutral switch is not the problem
     
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  9. 243jimb

    243jimb Member

    Nov 27, 2018
    12
    8
    Canada
    Possibly there has been dirt that has by-passed the filters and clogged the injectors. If you can remove the injectors then crank the engine and see if fuel is being delivered. If the engine is cranking then none of the interlocks are to blame, including the neutral switch.
     

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