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Thread: Stalling when revs dropped suddenly

  1. #1
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    Stalling when revs dropped suddenly

    Noticed over the last couple of days the clutch bite point seems to be very close the bar,

    as soon as i move the lever its wanting to be off

    Also a couple of times, ive gone to slow down and as i pull the clutch in, its stalled.

    Also noticed a hot type smell occalsionally not burning though

    Tickover is normally aroung 1k+-50 (methinks a bit low )

    is this the start of the clutch needing replacement?

    26k on the clock

  2. #2
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    Ever thought about riding the bike to a dealer/specialist ?

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    Have you tried using the clutch lever barrel adjuster to give you more lever action?

  4. #4
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    Quote Originally Posted by andeebee View Post
    Have you tried using the clutch lever barrel adjuster to give you more lever action?
    Its a hydraulic clutch

  5. #5
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    Check the clutch fluid level. It rises as the clutch wears so might be over-full. Too much fluid will eventually cause the clutch to release early and eventually it will slip. It uses a special oil - Citroen LHM is the same stuff.

    Weak ignition coils will cause it to stall as will a sticking idle stepper motor. Throttle balance often helps. TPS is easy to reset but probably won't make any difference
    08 R1200GSA
    76 Suzuki GT750

  6. #6
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    Quote Originally Posted by Santa-2512 View Post
    Its a hydraulic clutch
    You can still get more lever movement though. In any case lets be fair 26k miles for a clutch is F'n bonkers... especially when you consider what you have to do replace and the cost of the replacement parts any sensible clutch design would have the plates replaced in a couple of hours max and no where near the cost of a BMW setup. These bike are a complete head F they are nice to ride etc but the rest of the ownership is a complete nonsense.

  7. #7
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    My Diversion 900 (that made 90 bhp officially) had a new clutch at 70K. The friction plates were at service minimum and right on cue, it was slipping. Total cost complete with new plates, new springs (that I probably didn't need) and delivery from Wemoto was under £60. This is a bike not noted for low costs spares. Fitting took an hour and I didnt even need to drain the oil.

    BMW feck about with a back to front clutch (because their bike designers can't understand how cars use toroid slave cylinders) and charge best part of £100 for what amounts to a VW Beetle clutch that you can get for 1/3 of the price. God help us on the cost of a pressure plate.
    08 R1200GSA
    76 Suzuki GT750

  8. #8
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    But that all said unusual stalling is more likely to be ignition or fuel. Check out the coils first - easy to do and they do fail. A coil often won't fail completely but carries on being a pain in a A until one day it stops working. A few miles later its partner will do the same.
    08 R1200GSA
    76 Suzuki GT750

  9. #9
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    Quick update -- did it twice today,

    narrowed down events leading upto the stall

    It seems to occur if i'm running on low revs ( just over idle say 2k) at slow speeds (walking pace)

    as soon as i release the throttle, the revs drop and then it stalls,

    Almost as if the compression is too great for the pistons to overcome

    or the fuelling has dropped off?

    Will do it hot or cold as well

    Ive noticed that at idle sometimes the revs are high, and slow to drop or low and

    needs a blip to bring them up.

    On cold starts the revs bounce too, 1800 - 2K dropping to 1200-1500

    From what ive had before, its usually high rpm until a set temp/ time is reached then the revs drop ??

    Hmmm

  10. #10
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    Clutch

    It might be a red herring but your symptoms relating to the clutch (not the stalling) sound like the slave cylinder starting to fail. I say this as I had mine go on my (new to me) 1200 RTP whilst sitting in traffic in Westminster a few weeks back. With the clutch pulled in and the bike in gear it was stalling ... different to you but clutch sounds similar.

    Steptoe sorted it pretty quickly and the post mortem of the slave cylinder was spot on . I'll never be sitting in traffic with the clutch pulled in and the bike in gear unless absolutely necessary again.

    Just a thought.

  11. #11
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    Dont think it's clutch,

    This morning it wouldnt start, not as in non starting, it strted, ran for about 3 seconds very lumpily, then stalled

    Restarting, you could hear it was struggling to catch on a closed throttle, so i gave it some throttle and it caught and ran.

    Keeping the throttle blipped, at junctions, i manged to get to work.

    when i let the throttle close at work, it was idling at about 1800rpm .. snapping the throttle it dropped to about 1100, and went into its lumpy low speed tickover.

    I think carb balance, and TPS need looking at --- will stick the GS on it and see what it shows,

    and do a carb balance over xmas


    hmmm

  12. #12
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    I know you don't need reminding, but you should have bought my bike when you had the chance.

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    Quote Originally Posted by tuftywhite View Post
    I know you don't need reminding, but you should have bought my bike when you had the chance.
    You dont know how much i love you xxxx

  14. #14
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    Quote Originally Posted by Santa-2512 View Post
    You dont know how much i love you xxxx
    Sorry mate, I've bitten my lip for so long now. I genuinely feel sorry for you and the quantity of issues you've had.

    I hope you get it all sorted soon.

  15. #15
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    Quote Originally Posted by jwpzx9r View Post
    In any case lets be fair 26k miles for a clutch is F'n bonkers... especially when you consider what you have to do replace and the cost of the replacement parts any sensible clutch design would have the plates replaced in a couple of hours max and no where near the cost of a BMW setup. These bike are a complete head F they are nice to ride etc but the rest of the ownership is a complete nonsense.
    try doing a clutch on a Guzzi , BMW is a piece of piss in comparison .

  16. #16
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    Quote Originally Posted by tuftywhite View Post
    Sorry mate, I've bitten my lip for so long now. I genuinely feel sorry for you and the quantity of issues you've had.

    I hope you get it all sorted soon.
    It's ok, it wouldnt be fun if there was no piss taking.... and yes i do wonder why i didnt take some of the offers from here

    When its going right, its a brilliant bike, puts a grin on my face, its the little niggles that keep coming up that really piss you off

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