G650GS starting issues

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Thread: G650GS starting issues

  1. #1
    Bike
    2011 G650GS in red
    Join Date
    Apr 2011
    Location
    Bishops Stortford, Herts.
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    Default G650GS starting issues (bad valve decompression lever)

    My newish bike starts perfectly every time when cold and runs perfectly as well.

    There is a slight issue when the bike is warm/hot. When I hit the starter the engine swings over but its almost as if the compression is too much for the starter and it stops turning over before it fires. (Similar symptoms to the battery being flat). It sometimes does this several times before it fires up.

    The battery has been checked and is fine.

    To overcome this I either turn off the ignition and try again, or (on the advice of the BMW service guy) open the throttle a little and try again. It always starts eventually, but its a bit embarrassing on the petrol forecourt etc.

    Apparently there is an automatic decompression valve in the engine and this may be part of the problem.

    BMW have offered to take it in and investigate, but first I'd like to know if anyone else has similar issues and is it a family trait?
    Last edited by bumpy; 12-12-2013 at 05:49 PM.

  2. #2
    Bike
    Red G650GS 2011
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    Jun 2011
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    N London
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    Default

    Yes mine does that - I put it down to my incompetence ie not pressing the starter for long enough etc. Its fine cold starting but starting warm takes a couple of tries, so I guess a quirk of the bike. As to the embarrassing part, being female they just expect it when I leave without a hitch then they are surprised
    Dizzxx

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  4. #3
    Bike
    2011 G650GS in red
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    Apr 2011
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    Bishops Stortford, Herts.
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    Come on now, I know there's more than 2 owners out here.

  5. #4
    Bike
    F650GS (Twin) 2010 & G650GS 2011
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    Jul 2010
    Location
    Sheffield, UK
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    191
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    Ours starts fine.... except if in gear unlike every other bike we have owned not enough woomf from the starter to kick her into life, stick her in neutral and no problems in over 3000 miles.

  6. #5
    Bike
    G650GS 2011
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    Aug 2011
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    Suffolk, UK
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    Sorry bumpy wasn't paying attention Only done 500 miles so far, at the moment she's starting fine, cold or hot.

  7. #6
    Bike
    2011 G650GS in red
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    Apr 2011
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    Bishops Stortford, Herts.
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    Default

    For those that are replying can you say if you are using the normal BMW 'hands off the throttle' approach.

  8. #7
    Bike
    GS/Gd Dakar 2003
    Join Date
    Oct 2008
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    wakefield
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    896
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    Quote Originally Posted by bumpy View Post
    For those that are replying can you say if you are using the normal BMW 'hands off the throttle' approach.
    and waiting for 'check' lights to extingish before hitting starter .. . . . . . .
    2003 GS Dakar
    BMW Panniers, top box, tank bag
    + loads TT stuff that came with it!

  9. #8
    Bike
    F650GS (Twin) 2010 & G650GS 2011
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    Jul 2010
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    Sheffield, UK
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    Yep no throttle, and wait for the pre start check to finish.

  10. #9
    Bike
    2011 G650GS in red
    Join Date
    Apr 2011
    Location
    Bishops Stortford, Herts.
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    Default

    Have just been out for a ride and even with meticulous attention to the starting process, its still won't start when hot.

    It turns over about once or twice before it seems to be beaten by the engine compression and stops turning over (let alone firing).

    So at present with this mini survey we have a 50/50 split.

    Hi Dizz
    I know you were having bigger problems than me. Are you booked in to have BMW take a look?

  11. #10
    Bike
    G650GS 2011
    Join Date
    May 2011
    Location
    UK
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    15
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    I have the same hot start problem, only got 400 miles up, giving it a very generous handful of throttle when hot seems to work

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