F800GS acting up during warmup

Discussion in 'Parallel Universe' started by Tor, Mar 25, 2012.

  1. Tor

    Tor Imported Viking

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    This is not a problem in the winter time, when ambient temps are low.

    When temps are > 80 F (roughly) the bike starts up fine from cold. After about a minute, it starts to run very rough. It sounds like it runs too rich. As soon as it passes this temperature stage, and warms up further towards normal operating temp, it runs fine again. Anyone else experienced / have this issue? Anyone know what it might be? :ear
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  2. JRWooden

    JRWooden Long timer

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    Tor:

    Has it always done this, or just recently start acting up?
    Are you under warranty? If so, I'd spin by the shop see if they have a firmware update or any ideas, check for any stored error codes and get them to reset the 'adaptation values" of your bike if they think it might be appropriate.
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  3. Tor

    Tor Imported Viking

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    I had the same issue last summer, when the weather temps came up. It's still under warranty. I might call Charlotte and see what they say.
    The rough idle only happens during warmup, and then just for about 30 seconds or so. When the bike continues to warm up, it runs fine again. So it appears its only in a very narrow engine temperature range during warmup that this happens.
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  4. JRWooden

    JRWooden Long timer

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    I think I would spin by the shop at worst it will be noted that the problem was occuring under warranty,
    at best maybe there is a stored transient error code that means something.
    If you set it up in advance it would seem like something they could do while you wait!
    Computers ... BAH ... sometimes I long for the good old days.

    For a while my bike had a flat spot at about 4k rpm... but it magically worked its self out over a period of about 3 or 4 months...........
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  5. Tor

    Tor Imported Viking

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    Yep. Have the same setup. But it ran rough before I put the modification on. I agree it really helps the throttle snatch on the 800. I'll probably end up letting the dealer look at it.

    Sent via Tor's Droid
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  6. HighTechCoonass

    HighTechCoonass Living the Dream....

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  7. Tor

    Tor Imported Viking

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    Hmmm. I'm running 89 (always have). I'll pour some 93 in her next time I fill up. Not sure why this would affect the warm-up idle, but hey.....I'll try :-). I'm pretty religious about using Techron on a regular interval too. I'll report back.
    #7
  8. Grits&Gravy

    Grits&Gravy Been here awhile

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    I've used nothing but premium in my F8 from day 1 and still had the same issues Tor has had. I also have a Jeep with a programmer on it and run it in the performance mode, which requires premium gas. I always run premium in it and from time to time the valves will clatter depending on where I fill up. There is apparently a difference between gas brands etc.....
    #8
  9. Tor

    Tor Imported Viking

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    You say you had the same issue. Did it just go away, or did you change anything?
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  10. ZachZ

    ZachZ Adventurer

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    I recently started having the same issue (2011 F800gs). The weather has been in the 60-70's when it happens. I thought it was peculiar however it goes away after the bike warms up. I have a HTCA power commander and I thought that may be causing it b/c I haven't changed the temp switch from cold to hot. It's annoying, but it hasn't inconvenienced me yet.
    #10