Triumph Bonneville T100 (2009) Oil Leak

Discussion in 'Bonneville' started by Scott Roberts, Apr 6, 2021.

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  1. Scott Roberts

    Scott Roberts New Member

    Apr 6, 2021
    5
    3
    Cheshunt
    #1 Scott Roberts, Apr 6, 2021
    Afternoon everyone,

    I've had my 2009 Triumph Bonneville T100 in the garage for just over a month and have come back to find a horrendous oil leak underneath the bike. Any suggestions?

    Scott

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  2. Samsgrandad

    Samsgrandad Senior Member

    Dec 15, 2019
    700
    243
    Somerset
    #2 Samsgrandad, Apr 6, 2021
    Pictures are rather close up to confirm the general area of the leak but as it is just behind the sight glass it looks to me to be from the front sprocket and would appear to be chain lube or general gunge from the chain.
    I suggest you take the sprocket cover off, have a look and clean the area.
     
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  3. philc1381

    philc1381 Active Member

    Jan 4, 2020
    164
    33
    North Notts uk
    #3 philc1381, Apr 6, 2021
    Hi I had the same thing on my 2003, turned out to be build up of chain lube behind the sprocket cover.
    Hope yours I’d the same easy fix.
     
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  4. Scott Roberts

    Scott Roberts New Member

    Apr 6, 2021
    5
    3
    Cheshunt
    #4 Scott Roberts, Apr 6, 2021
    Cool, thanks, I'll take it apart and have a look. It looks like it could be the chain cover. I'll update if it's not
     
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  5. joe mc donald

    joe mc donald Joe
    Subscriber

    Dec 26, 2014
    15,494
    1,000
    slough / burnham
    #5 joe mc donald, Apr 6, 2021
    Scott Roberts
    Welcome to the family. Hope it is an easy fix like the peeps have said. Do show the beastie of to the inmates here in the asylum.
    Joe.
     
  6. Scott Roberts

    Scott Roberts New Member

    Apr 6, 2021
    5
    3
    Cheshunt
    #6 Scott Roberts, Apr 12, 2021
    So I took off the front sprocket cover for the chain and it was gopping. Full off gunk. Got the cillit bang out and cleaned it all up, mopped up all the lubricant that had run down the casing and the bottom of the engine. Cleaned up the chain, lubed it up and replaced. Bike seems back to normal. Thanks for all the advice gents.

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