Why is there oil in this bolt hole? (2020 F850GS)

Discussion in 'Parallel Universe' started by david_r_adv, Jan 30, 2021.

  1. david_r_adv

    david_r_adv Adventurer

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    Today I removed my Touratech Rallyeform skid plate and its mount for the first time to do some cleaning, etc.

    Laying under the bike, I noticed that there was oil in a particular bolt hole. Anyone have an idea what’s happening here?

    Attached Files:

    #1
  2. The Maz

    The Maz Clueless and lost

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    Was too long of a bolt used, and it bottomed and breached the inside of the sump? Just a guess, cause there should be no oil in the skidplate mount holes.
    #2
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  3. shuswap1

    shuswap1 Long timer

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    You're losing oil through that bolt hole, sump is wet....for goodness sakes don't run the engine until you sort this out! I'm also thing too long a bolt for the skidplate mount? Or defective sump casting?
    #3
  4. bobwolff68

    bobwolff68 Been here awhile

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    Oh man that's a scary find! Def check that oil level. Let us know what you find too after you clean out the hole and such - would be great to get a pretty close and crisp photo of it dry to show to BMW.
    #4
  5. david_r_adv

    david_r_adv Adventurer

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    I used the original bolts from the location per these instructions:

    https://cdn.touratech-usa.com/09-082-5135-0.pdf
    #5
  6. david_r_adv

    david_r_adv Adventurer

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    Intrigued by your latter suggestion, as the bolts used are the originals per Touratech’s instructions above.
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  7. shuswap1

    shuswap1 Long timer

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    It's an odd problem that you have. Did you install the plate yourself? Not insinuating it was done wrong but something isn't right to have oil weeping from that bolt hole.
    Were the mounting fasteners of all the same length?
    Have you hit anything major with the skidplate?
    Skidplate more or less straight on removal?
    #7
  8. BygDaddee

    BygDaddee Long timer

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    Have you got oil coming out of the bolt hole, or just oil in the bolt hole ?
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  9. heatmizr

    heatmizr n00b-tastic

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    I was thinking same thing. First step is Clean that hole out and see if it's really coming from inside. I'd run the engine to see if it weeps under pressure.
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  10. Vark

    Vark Long timer

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    Agree - - need more info/diagnostics.

    Definitely very odd, though.
    I like the suggestion to clean it out as thoroughly as possible (Q-tips?), then run engine while on the center stand and observe closely.
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  11. david_r_adv

    david_r_adv Adventurer

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    Came out this morning to a single drop of oil on the ground directly below that hole.

    I cleaned the surrounding area and the hole itself thoroughly with a qtip. I then let the bike idle for a few minutes (a few light revs thrown in for good measure).

    Checked the hole again with another qtip and it seemed dry. Also checked the oil level, which seemed ok.

    Attached Files:

    #11
  12. heatmizr

    heatmizr n00b-tastic

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    For the life of me I can't figure out why they would want us to attach skid plates directly to the cases, it seems like a really really bad idea... But that's besides the point.
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  13. david_r_adv

    david_r_adv Adventurer

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    The stock plastic one connects in the same places. Definitely an odd design choice.
    #13
  14. SnoDrtRider

    SnoDrtRider I've been lost here before...

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    The oil could have been from an oil change or spill and I may have capillaried up the threads.
    #14
  15. BygDaddee

    BygDaddee Long timer

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    Stressed member frame just like the 800, not usually anything down there to attach it to except engine

    a well designed point of the Tenere 700, even though its also a stressed member frame they added some frame rails, but its been common on a few yamaha models to have these bolted on lower rails

    6795A86A-67F2-4970-9E49-885E580405EB.jpeg
    #15
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  16. shuswap1

    shuswap1 Long timer

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    I've hit some pretty big rocks with my F700 GS factory metal skidplate and while it split a welded seam a little and caved in a significant area it did nothing to the sump. Looks like you might be a little sloppy filling/draining the oil last time, eh? Hope that's all it is.
    #16
  17. david_r_adv

    david_r_adv Adventurer

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    Blame the sloppy job on the dealership that did the running in service... they also didn’t adjust the steering nut :hmmmmm
    #17
  18. ROMAD

    ROMAD Been here awhile

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    Clean the hole up and everything Around it and then lightly dust the area around the hole with some baby powder. Should become clearer if oil is running down into the hole or coming out of it. Streaks above the hole is oil running Down to it and streaks away from the hole is leaking from it.
    #18