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Thread: 2013 r1200 rt does not maintain constant acceleration

  1. #1
    Seeking the 4TH dimension _RockZ_'s Avatar
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    2013 r1200 rt does not maintain constant acceleration

    In every gear when I twist the throttle to increase speed It intermittently speeds up

    I have attached the GS 911 to it and it reads no codes
    I have rode it constantly and every other day I fill it with good fuel

    It has 31,000 miles on it
    The issue is more prevalent at fourth gear fifth gear six gear when I go to pass other vehicles
    I pulled the spark plugs out and they look good just a little white

    I did a major service at 24,000 miles by myself new fluids all around new air filter



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    Friend of Bill W. Kiss the Wife.Love the Kids.Live the Day.

    2005 R1200RT
    MOA#147877

  2. #2
    My 2012 rt was doing something a little different more of a drastic interminte surge. It showed no codes . They replaced the fuel pump under warranty . Still did it .
    Turns out it was the throttle position sensor. I could see it being that on your bike.
    Please let us know when you figure it out.


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  3. #3
    Seeking the 4TH dimension _RockZ_'s Avatar
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    I ordered the twin Max to sync After I do a valve adjustment and I also ordered new plugs thank you for your input Iím a look into the throttle position sensor


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    Friend of Bill W. Kiss the Wife.Love the Kids.Live the Day.

    2005 R1200RT
    MOA#147877

  4. #4
    Registered User drneo66's Avatar
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    Failing fuel pump controller?




    (Hi from Rochester!)
    Current: 2007 BMW R1200RT
    Former: 1995 BMW K75S, 2009 BMW G650GS
    MOA Member #:150400, IBA#: 37558

  5. #5
    i should be out riding! wyman.winn's Avatar
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    in the upper gears, observe the speedo AND the tach...if the speed does not increase when twisting the throttle but the RPMs increase you have a slipping clutch...

    report back with your findings...

    ~wyman~


    2013 BMW R1200RT - Sassy - Fluid Grey Metallic

  6. #6
    Seeking the 4TH dimension _RockZ_'s Avatar
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    The tach does show the same acceleration problem. So no clutch slippage


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    Friend of Bill W. Kiss the Wife.Love the Kids.Live the Day.

    2005 R1200RT
    MOA#147877

  7. #7
    Seeking the 4TH dimension _RockZ_'s Avatar
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    I have followed the do it yourself and valve adjustments all models attached are the pictures of what I have on a 2013 RT




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    2005 R1200RT
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  8. #8
    Seeking the 4TH dimension _RockZ_'s Avatar
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    Below are the pictures of the cams Iím just wondering how do I find top dead center because it doesnít match the tutorial



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    2005 R1200RT
    MOA#147877

  9. #9
    i should be out riding! wyman.winn's Avatar
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    Quote Originally Posted by _RockZ_ View Post
    Below are the pictures of the cams I’m just wondering how do I find top dead center because it doesn’t match the tutorial



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    Pull the plugs, but gearbox in 6th gear and rotate the rear wheel in the direction of travel until the two slots on the end of the cams point towards each other and are in line...that is TDC for the cylinder you are looking at...

    top image...see the two slots or notches in the end of the cam...?
    ~wyman~


    2013 BMW R1200RT - Sassy - Fluid Grey Metallic

  10. #10
    Seeking the 4TH dimension _RockZ_'s Avatar
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    Thank you for the info

    I have set it to top dead center and checked the Exhaust valves with .30 they are a little loose I checked the intake valves with .15 and they are also a little loose on both sides

    So if I was to adjust the valve clearances on this year of motorcycle I would have to get shims because there is no bolts to loosen and tighten correct?


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    2005 R1200RT
    MOA#147877

  11. #11
    Seeking the 4TH dimension _RockZ_'s Avatar
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    Sent from my iPhone using Tapatalk
    Friend of Bill W. Kiss the Wife.Love the Kids.Live the Day.

    2005 R1200RT
    MOA#147877

  12. #12
    i should be out riding! wyman.winn's Avatar
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    Quote Originally Posted by _RockZ_ View Post
    Thank you for the info

    I have set it to top dead center and checked the Exhaust valves with .30 they are a little loose I checked the intake valves with .15 and they are also a little loose on both sides

    So if I was to adjust the valve clearances on this year of motorcycle I would have to get shims because there is no bolts to loosen and tighten correct?


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    to adjust your valves you will first need to remove the "semi-spheres" from under the follower, measure and determine the correct "semi-sphere" to replace it with...how "loose" are the feeler gauges?...to be honest here, i use a set of calibrated feeler gauges to check the valves...these will give you real values to determine whether or not you need to go beyond simply checking

    ~wyman~


    2013 BMW R1200RT - Sassy - Fluid Grey Metallic

  13. #13
    Registered User pappy35's Avatar
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    Quote Originally Posted by wyman.winn View Post
    to adjust your valves you will first need to remove the "semi-spheres" from under the follower, measure and determine the correct "semi-sphere" to replace it with...how "loose" are the feeler gauges?...to be honest here, i use a set of calibrated feeler gauges to check the valves...these will give you real values to determine whether or not you need to go beyond simply checking

    THIS^^^

    I use feeler gages to determine the exact clearance. If one is out, you need to remove the cam follower (replace the circlip with new when reinstalling, you do not what one of the followers falling out when the engine is running), measure the existing shim with a micrometer, and do the math to figure what size shim you need. If you remove all eight (carefully keeping track of which one goes where mind you), you might be able to get a discrepant valve back into the correct range simply by rearranging where you reinstall the shims and thus not have to order any.

    I use this spreadsheet to do the math for me.
    '13 R1200RT 90th Anniversary Edition

  14. #14
    Seeking the 4TH dimension _RockZ_'s Avatar
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    Thank you for all your help my valves were all within limits the problem turned out to be spark plugs

    After I checked the valve limits I put the twin max on it and checked synchronization and everything turned out right how it supposed to be

    Problem solved with the great help of this fantastic for him




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    2005 R1200RT
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